Bump version

Make sure that the library is built before either of the isodate or setisodate
apps, otherwise we end up with problems compiling from scratch.

.gitignore

@@ -1,2 +1,3 @@
 obj
 html
+.*.swp

COPYING

@@ -1,278 +1,674 @@
                     GNU GENERAL PUBLIC LICENSE
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+                       Version 3, 29 June 2007
 
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+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
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+modify any covered work.  These actions infringe copyright if you do
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+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
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+any patent claim is infringed by making, using, selling, offering for
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+  11. Patents.
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+  A patent license is "discriminatory" if it does not include within
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+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
 otherwise) that contradict the conditions of this License, they do not
-excuse you from the conditions of this License.  If you cannot
-distribute so as to satisfy simultaneously your obligations under this
-License and any other pertinent obligations, then as a consequence you
-may not distribute the Program at all.  For example, if a patent
-license would not permit royalty-free redistribution of the Program by
-all those who receive copies directly or indirectly through you, then
-the only way you could satisfy both it and this License would be to
-refrain entirely from distribution of the Program.
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
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+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
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-If any portion of this section is held invalid or unenforceable under
-any particular circumstance, the balance of the section is intended to
-apply and the section as a whole is intended to apply in other
-circumstances.
+  13. Use with the GNU Affero General Public License.
 
-It is not the purpose of this section to induce you to infringe any
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-impose that choice.
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
 
-This section is intended to make thoroughly clear what is believed to
-be a consequence of the rest of this License.
-
-  8. If the distribution and/or use of the Program is restricted in
-certain countries either by patents or by copyrighted interfaces, the
-original copyright holder who places the Program under this License
-may add an explicit geographical distribution limitation excluding
-those countries, so that distribution is permitted only in or among
-countries not thus excluded.  In such case, this License incorporates
-the limitation as if written in the body of this License.
+  14. Revised Versions of this License.
 
-  9. The Free Software Foundation may publish revised and/or new versions
-of the General Public License from time to time.  Such new versions will
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
 be similar in spirit to the present version, but may differ in detail to
 address new problems or concerns.
 
-Each version is given a distinguishing version number.  If the Program
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-either of that version or of any later version published by the Free
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-this License, you may choose any version ever published by the Free Software
-Foundation.
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
 
-  10. If you wish to incorporate parts of the Program into other free
-programs whose distribution conditions are different, write to the author
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+  If the Program specifies that a proxy can decide which future
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+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
 
-                            NO WARRANTY
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
 
-  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
-FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
-OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
-PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
-OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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-TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
-PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
-REPAIR OR CORRECTION.
+  15. Disclaimer of Warranty.
 
-  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
-REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
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-POSSIBILITY OF SUCH DAMAGES.
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+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
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+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
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+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
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+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

README

@@ -1,7 +1,7 @@
 libiso8601
 ========================================================================
 (c)2007, Laurence Withers, <l@lwithers.me.uk>.
-Released under the GNU GPLv2. See file COPYING or 
+Released under the GNU GPLv3. See file COPYING or 
 http://www.gnu.org/copyleft/gpl.html for details.
 
 Really Quick Instructions
@@ -14,4 +14,10 @@ You might want to edit 'config' first. You might also want to set
 'INSTALL_PREFIX', which is prepended onto the destination of any
 installed file.
 
+Thanks
+------
+
+Robert Dunlop, <rjd@xyzzy.org.uk>
+ * found null terminating bug with iso8601_print()
+
 @TODO@

config

@@ -1,20 +1,38 @@
 # libiso8601/config
 # kate: replace-trailing-space-save true; space-indent true; tab-width 4;
-# vim: expandtab:ts=4:sw=4
+# vim: syntax=sh:expandtab:ts=4:sw=4
 #
 #  (c)2007, Laurence Withers, <l@lwithers.me.uk>.
-#  Released under the GNU GPLv2. See file COPYING or
+#  Released under the GNU GPLv3. See file COPYING or
 #  http://www.gnu.org/copyleft/gpl.html for details.
 #
 # This file contains options used to build libiso8601.
-#
 
+
+# PREFIX is the most important option. Many other paths are derived from it, as follows:
+#
+#   PREFIX      | /                 | /usr              | /usr/local        | /opt/*
+#   ------------+-------------------+-------------------+-------------------+-----------------
+#   BINDIR      | /bin              | /usr/bin          | /usr/local/bin    | /opt/*/bin
+#   SBINDIR     | /sbin             | /usr/sbin         | /usr/local/sbin   | /opt/*/sbin
+#   LIBDIR      | /lib              | /usr/lib          | /usr/local/lib    | /opt/*/lib
+#   INCLUDEDIR  | /usr/include      | /usr/include      | /usr/local/include| /opt/*/include
+#   CONFIGDIR   | /etc              | /etc              | /usr/local/etc    | /etc/opt/*
+#   VARDIR      | /var              | /var              | /var              | /var/opt/*
+#   SHAREDIR    | /usr/share        | /usr/share        | /usr/local/share  | /opt/*/share
+#   DOCSDIR     | /usr/share/doc    | /usr/share/doc    | /usr/local/share/doc, /opt/*/doc
+#   WEBDIR      | /srv/http         | /srv/http         | /srv/http         | /opt/*/http
+#
+# Specific notes:
+#   When installing, all paths are prepended with INSTALL_PREFIX.
+#   Any parameter can be overridden by setting an environment variable.
+#   CGIDIR is set to ${WEBDIR}/cgi-bin .
+#
 [ -z "${PREFIX}" ] && PREFIX="/usr/local"
+source "scripts/paths"
+
+# Project-specific variables below.
+[ -z "${DEFAULT_LEAP_TABLE}" ] && DEFAULT_LEAP_TABLE="${SHAREDIR}/libiso8601/leap-table"
+
 [ -z "${CC}" ] && CC="gcc"
 [ -z "${CFLAGS}" ] && CFLAGS="-g -O2 -W -Wall"
-[ -z "${BINDIR}" ] && BINDIR="${PREFIX}/bin"
-[ -z "${LIBDIR}" ] && LIBDIR="${PREFIX}/lib"
-[ -z "${INCLUDEDIR}" ] && INCLUDEDIR="${PREFIX}/include"
-[ -z "${FINALLIBDIR}" ] && FINALLIBDIR="${LIBDIR}"
-[ -z "${FINALINCLUDEDIR}" ] && FINALINCLUDEDIR="${INCLUDEDIR}"
-[ -z "${DOCSDIR}" ] && DOCSDIR="${PREFIX}/doc/libiso8601"

make.sh

@@ -1,8 +1,8 @@
-#!/bin/sh
+#!/bin/bash
 # libiso8601/make.sh
 #
-#  (c)2006-2007, Laurence Withers, <l@lwithers.me.uk>.
-#  Released under the GNU GPLv2. See file COPYING or
+#  (c)2009, Laurence Withers, <l@lwithers.me.uk>.
+#  Released under the GNU GPLv3. See file COPYING or
 #  http://www.gnu.org/copyleft/gpl.html for details.
 #
 
@@ -15,19 +15,19 @@ then
     echo "Configuration file not found???"
     exit 1
 fi
-source "config" # don't fail on error, since last command in config might return false
+source "./config" # don't fail on error, since last command in config might return false
 
 
 
 # Get version information
-source version || exit 1
+source "./version" || exit 1
 VERSION="${VERMAJOR}.${VERMINOR}.${VERMICRO}"
 
 
 
 # Get standard functions
 [ -z "${VERBOSE}" ] && VERBOSE="0"
-source scripts/functions.sh || exit 1
+source "./scripts/functions.sh" || exit 1
 
 
 # List of directories which will be emptied by clean.
@@ -292,5 +292,4 @@ done
 
 exit 0
 
-# kate: replace-trailing-space-save true; space-indent true; tab-width 4;
 # vim: expandtab:ts=4:sw=4

run-test.sh

@@ -1,9 +1,9 @@
-#!/bin/sh
+#!/bin/bash
 # libiso8601/test.sh
 # 
-#  (c)2006, Laurence Withers, <l@lwithers.me.uk>.
-#  Released under the GNU GPLv2. See file COPYING or
-#  http://www.gnu.org/copyleft/gpl.html for details.
+#  Copyright: ©2009–2011, Güralp Systems Ltd.
+#  Author: Laurence Withers <lwithers@guralp.com>
+#  License: GPLv3
 #
 
 # Running this script on its own will display a summary of all the
@@ -21,7 +21,7 @@ run_test() {
         return 1
     fi
 
-    LD_LIBRARY_PATH="obj" ${EXE} "$@" || return 1
+    LD_LIBRARY_PATH="obj:${LD_LIBRARY_PATH}" "${EXE}" "$@" || return 1
     return 0
 }
 
@@ -33,14 +33,15 @@ print_tests() {
     echo "---------------------------------------------------------------------"
     for EXE in obj/tests/*
     do
-        [ -x ${EXE} ] || continue
-        NAME=$(echo ${EXE} | sed 's,obj/tests/,,')
+        [ -x "${EXE}" ] || continue
+        NAME="$(echo "${EXE}" | sed 's,obj/tests/,,')"
         echo -ne "${NAME}\t"
-        LD_LIBRARY_PATH="obj" ${EXE} --print-summary
+        LD_LIBRARY_PATH="obj:${LD_LIBRARY_PATH}" "${EXE}" --print-summary
     done
 }
 
 
+
 # Main script
 if [ $# -eq 0 ]
 then
@@ -48,7 +49,6 @@ then
     exit 0
 fi
 
-run_test $*
+run_test "$@"
 
-# kate: replace-trailing-space-save true; space-indent true; tab-width 4;
 # vim: expandtab:ts=4:sw=4

scripts/.gitignore

@@ -7,8 +7,10 @@ build.docs.none
 build.files.none
 build.firmware.gpasm
 build.firmware.sdcc
+build.header.c
 build.lib.c
 build.lib.c++
+build.make.none
 build.module.c
 build.tests.c
 build.tests.c++

scripts/functions.sh

@@ -1,9 +1,8 @@
-#!/bin/sh
 # libiso8601/scripts/functions.sh
 #
-#  (c)2006, Laurence Withers, <l@lwithers.me.uk>.
-#  Released under the GNU GPLv2. See file COPYING or
-#  http://www.gnu.org/copyleft/gpl.html for details.
+#  Copyright: ©2007–2011, Güralp Systems Ltd.
+#  Author: Laurence Withers, <lwithers@guralp.com>
+#  License: GPLv3
 #
 
 # Common functions
@@ -64,5 +63,4 @@ do_cmd_redir() {
     fi
 }
 
-# kate: replace-trailing-space-save true; space-indent true; tab-width 4;
 # vim: expandtab:ts=4:sw=4

scripts/paths

@@ -0,0 +1,63 @@
+# libiso8601/scripts/paths
+#
+#  Copyright: ©2011, Güralp Systems Ltd.
+#  Author: Laurence Withers, <lwithers@guralp.com>
+#  License: GPLv3
+#
+#  Default path setup. Not meant for editing; use environment variables 
+#  to override values if needed.
+#
+
+MY_PREFIX="${PREFIX}"
+[ "${MY_PREFIX}" == "/" ] && MY_PREFIX=""
+
+[ -z "${BINDIR}" ] && BINDIR="${PREFIX}/bin"
+[ -z "${SBINDIR}" ] && SBINDIR="${PREFIX}/sbin"
+[ -z "${LIBDIR}" ] && LIBDIR="${PREFIX}/lib"
+
+if [ -z "${INCLUDEDIR}" ]
+then
+    case "${PREFIX}" in
+    /) INCLUDEDIR="/usr/include" ;;
+    *) INCLUDEDIR="${PREFIX}/include" ;;
+    esac
+fi
+
+if [ -z "${CONFIGDIR}" ]
+then
+    case "${PREFIX}" in
+    / | /usr) CONFIGDIR="/etc" ;;
+    /opt*) CONFIGDIR="/etc${PREFIX}" ;;
+    *) CONFIGDIR="${PREFIX}/etc" ;;
+    esac
+fi
+
+if [ -z "${VARDIR}" ]
+then
+    case "${PREFIX}" in
+    / | /usr | /usr/local) VARDIR="/var" ;;
+    /opt*) VARDIR="/var${PREFIX}" ;;
+    *) VARDIR="${PREFIX}/var" ;;
+    esac
+fi
+
+if [ -z "${SHAREDIR}" ]
+then
+    case "${PREFIX}" in
+    /) SHAREDIR="/usr/share" ;;
+    *) SHAREDIR="${PREFIX}/share" ;;
+    esac
+fi
+[ -z "${DOCSDIR}" ] && DOCSDIR="${SHAREDIR}/doc"
+
+if [ -z "${SRVDIR}" ]
+then
+    case "${PREFIX}" in
+    / | /usr | /usr/local) SRVDIR="/srv" ;;
+    *) SRVDIR="${PREFIX}/srv" ;;
+    esac
+fi
+[ -z "${WEBDIR}" ] && WEBDIR="${SRVDIR}/http"
+[ -z "${CGIDIR}" ] && CGIDIR="${WEBDIR}/cgi-bin"
+ 
+# vim: syntax=sh:expandtab:ts=4:sw=4

src/docs/MainPage.dox

@@ -1,15 +1,20 @@
 /* libiso8601/src/docs/MainPage.dox
  *
- *  (c)2007, Laurence Withers, <l@lwithers.me.uk>.
- *  Released under the GNU GPLv2. See file COPYING or
+ *  (c)2007-2010, Laurence Withers, <l@lwithers.me.uk>.
+ *  Released under the GNU GPLv3. See file COPYING or
  *  http://www.gnu.org/copyleft/gpl.html for details.
 */
 
-/*! \mainpage
+/*! \mainpage Library for manipulating ISO8601-format dates and times
+
+\c libiso8601 is a library containing conversion routines for ISO8601-format
+dates and times and a set of associated date/time manipulation routines. It has
+support for leap seconds and nanosecond accuracy and is intended for use in
+e.g. physical science applications.
 
 */
 
 /* options for text editors
 kate: replace-trailing-space-save true; space-indent true; tab-width 4;
-vim: expandtab:ts=4:sw=4
+vim: expandtab:ts=4:sw=4:syntax=doxygen
 */

src/docs/build.docs

@@ -39,5 +39,4 @@ then
     docs_BUILT=1
 fi
 
-# kate: replace-trailing-space-save true; space-indent true; tab-width 4;
-# vim: expandtab:ts=4:sw=4
+# vim: syntax=sh:expandtab:ts=4:sw=4

src/docs/build.install-docs

@@ -17,5 +17,4 @@ do
 done
 
 print_success "Documentation installed"
-# kate: replace-trailing-space-save true; space-indent true; tab-width 4;
-# vim: expandtab:ts=4:sw=4
+# vim: syntax=sh:expandtab:ts=4:sw=4

src/isodate/.params

@@ -0,0 +1 @@
+app c isodate bin

src/isodate/000_TopSource.c

@@ -0,0 +1,147 @@
+/* libiso8601/src/isodate/000_TopSource.c
+ *
+ *  (c)2007, Laurence Withers, <l@lwithers.me.uk>.
+ *  Released under the GNU GPLv2. See file COPYING or
+ *  http://www.gnu.org/copyleft/gpl.html for details.
+*/
+
+/* Below are all the includes used throughout the application. */
+#include <stdio.h>
+#include <getopt.h>
+#include <stdlib.h>
+#include "iso8601.h"
+
+
+
+void usage(void)
+{
+    fputs("Usage:\n\n"
+        "    isodate [options] [date ...]\n\n"
+        "Valid options:\n"
+        " -h, --help                Display this screen.\n"
+        " -e, --extended            Use extended display format.\n"
+        " -y, --year                Only display year.\n"
+        " -n, --month               Display year, month.\n"
+        " -d, --day                 Display year, month, day [default].\n"
+        " -o, --ordinal             Display year, ordinal day.\n"
+        " -w, --week                Display ISO year, ISO week.\n"
+        " -W, --week-day            Display ISO year, ISO week, ISO weekday.\n"
+        " -r, --hour                Display hour.\n"
+        " -R, --hour-fraction       Display hour and fraction of hour.\n"
+        " -m, --minute              Display hour, minute.\n"
+        " -M, --minute-fraction     Display hour, minute and fraction of\n"
+        "                               minute.\n"
+        " -s, --second              Display hour, minute, second.\n"
+        " -S, --second-fraction     Display hour, minute, second and fraction\n"
+        "                               of second [default].\n"
+        " -U, --utc-offset <n>      Display time as if timezone offset was\n"
+        "                               <n> seconds.\n"
+        " -Z, --utc                 Display time in UTC.\n"
+        "\n"
+        "If specified, one or more ISO8601 dates will be parsed and displayed\n"
+        "in the format given. Otherwise, the system clock will be queried and\n"
+        "its time displayed.\n"
+    "\n", stdout);
+}
+
+
+
+struct option options[] = {
+    { "help", no_argument, 0, 'h' },
+    { "extended", no_argument, 0, 'e' },
+    { "year", no_argument, 0, 'y' },
+    { "month", no_argument, 0, 'n' },
+    { "day", no_argument, 0, 'd' },
+    { "ordinal", no_argument, 0, 'o' },
+    { "week", no_argument, 0, 'w' },
+    { "week-day", no_argument, 0, 'W' },
+    { "hour", no_argument, 0, 'r' },
+    { "hour-fraction", no_argument, 0, 'R' },
+    { "minute", no_argument, 0, 'm' },
+    { "minute-fraction", no_argument, 0, 'M' },
+    { "second", no_argument, 0, 's' },
+    { "second-fraction", no_argument, 0, 'S' },
+    { "utc-offset", required_argument, 0, 'U' },
+    { "utc", no_argument, 0, 'Z' },
+    { 0, 0, 0, 0 }
+};
+
+
+
+int main(int argc, char* argv[])
+{
+    struct iso8601_details det = {
+        .date_prec = iso8601_prec_day,
+        .time_prec = iso8601_prec_secfrac,
+        .extended = 0,
+        .tz_sec = 0
+    };
+    int override_tz = 0, ret = 0;
+    char* endp, datestr[100];
+    struct iso8601_date date;
+    struct iso8601_details det2;
+
+    while(1) {
+        switch(getopt_long(argc, argv, "heyndowWrRmMsSU:Z", options, 0)) {
+        case -1: goto opts_done;
+        case '?': return 1;
+        case 'h': usage(); return 0;
+        case 'e': det.extended = 1; break;
+        case 'y': det.date_prec = iso8601_prec_year; break;
+        case 'n': det.date_prec = iso8601_prec_month; break;
+        case 'd': det.date_prec = iso8601_prec_day; break;
+        case 'o': det.date_prec = iso8601_prec_ord; break;
+        case 'w': det.date_prec = iso8601_prec_week; break;
+        case 'W': det.date_prec = iso8601_prec_wday; break;
+        case 'r': det.time_prec = iso8601_prec_hour; break;
+        case 'R': det.time_prec = iso8601_prec_hourfrac; break;
+        case 'm': det.time_prec = iso8601_prec_min; break;
+        case 'M': det.time_prec = iso8601_prec_minfrac; break;
+        case 's': det.time_prec = iso8601_prec_sec; break;
+        case 'S': det.time_prec = iso8601_prec_secfrac; break;
+        case 'Z': det.tz_sec = 0; override_tz = 1; break;
+        case 'U':
+            endp = 0;
+            det.tz_sec = strtol(optarg, &endp, 0);
+            if(!endp || *endp || det.tz_sec <= -86400 || det.tz_sec >= 86400) {
+                fputs("Invalid UTC offset. Must be an integral number of seconds\n"
+                    "between -86400 and 86400, exclusive.\n", stderr);
+                return 1;
+            }
+
+            override_tz = 1;
+        }
+    }
+
+  opts_done:
+    if(optind == argc) {
+        iso8601_now(&date, &det2);
+        if(!override_tz) det.tz_sec = det2.tz_sec;
+
+        iso8601_print(datestr, sizeof(datestr), &date, &det);
+        fputs(datestr, stdout);
+        putc('\n', stdout);
+    } else {
+        for(; optind != argc; ++optind) {
+            if(iso8601_parse(argv[optind], &date, 0, &det2)) {
+                fputs("Couldn't parse date.\n", stderr);
+                ret = 1;
+                continue;
+            }
+            if(!override_tz) det.tz_sec = det2.tz_sec;
+
+            iso8601_print(datestr, sizeof(datestr), &date, &det);
+            fputs(datestr, stdout);
+            putc('\n', stdout);
+        }
+    }
+
+    return ret;
+}
+
+
+
+/* options for text editors
+kate: replace-trailing-space-save true; space-indent true; tab-width 4;
+vim: expandtab:ts=4:sw=4
+*/

src/isodate/build.app

@@ -0,0 +1,43 @@
+# These are external variables, and shouldn't clash with anything else
+#  isodate
+#  isodate_BUILT
+#
+
+build_target libiso8601
+
+if [ -z ${isodate_BUILT} ]
+then
+    isodate="obj/isodate"
+    EXTRAS="-std=gnu99 -D_GNU_SOURCE -DAPP_NAME=\"isodate\" \
+        ${libiso8601} ${libiso8601_DEP_CFLAGS} ${libiso8601_DEP_LIBS}"
+
+    echo "Building application ${isodate}..."
+
+    do_cmd source src/isodate/build.monolithic || return 1
+
+    MODIFIED=0
+    for test in ${MONOLITHIC_TESTS} ${SRC}
+    do
+        if [ ${test} -nt ${isodate} ]
+        then
+            MODIFIED=1
+            break
+        fi
+    done
+
+    if [ ${MODIFIED} -ne 0 ]
+    then
+        echo " Compiling..."
+
+        do_cmd ${CC} ${CFLAGS} -I obj -o "${isodate}" ${SRC} ${EXTRAS} || return 1
+
+        print_success "Application built"
+    else
+        print_success "Application up to date"
+    fi
+
+    isodate_BUILT=1
+
+fi
+
+# vim: syntax=sh:expandtab:ts=4:sw=4

src/isodate/build.default

@@ -0,0 +1 @@
+source src/isodate/build.app

src/isodate/build.install

@@ -0,0 +1 @@
+source src/isodate/build.install-app

src/isodate/build.install-app

@@ -0,0 +1,11 @@
+build_target isodate
+
+# make paths (this is for Gentoo in particular)
+build_dir_tree "${BINDIR}" || return 1
+
+# install binary
+echo "Installing binaries into '${BINDIR}'"
+install_file "${isodate}" "${BINDIR}" 0755 || return 1
+print_success "Done"
+
+# vim: syntax=sh:expandtab:ts=4:sw=4

src/isodate/build.monolithic

@@ -0,0 +1,17 @@
+# These are external variables, and shouldn't clash with anything else
+#  isodate_MONOLITHIC
+#
+
+SRC="obj/isodate.c"
+MONOLITHIC_TESTS="src/isodate/build.app src/isodate/build.monolithic"
+
+if [ -z "${isodate_MONOLITHIC}" ]
+then
+    MONOLITHIC_SOURCE="$(find src/isodate/ -name '*.c' | sort)"
+    make_monolithic ${SRC} C || return 1
+
+    isodate_MONOLITHIC=1
+    MONOLITHIC_DOC="${MONOLITHIC_DOC} ${SRC}"
+fi
+
+# vim: syntax=sh:expandtab:ts=4:sw=4

src/libiso8601/000_TopHeader.h

@@ -1,16 +1,21 @@
 /* libiso8601/src/libiso8601/000_TopHeader.h
  *
- *  (c)2006, Laurence Withers, <l@lwithers.me.uk>.
- *  Released under the GNU GPLv2. See file COPYING or
+ *  (c)2006-2010, Laurence Withers, <l@lwithers.me.uk>.
+ *  Released under the GNU GPLv3. See file COPYING or
  *  http://www.gnu.org/copyleft/gpl.html for details.
 */
 
 #ifndef HEADER_libiso8601
 #define HEADER_libiso8601
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* standard includes, or includes needed for type declarations */
 #include <time.h>
 #include <stdint.h>
+#include <sys/time.h>
 
 /* options for text editors
 kate: replace-trailing-space-save true; space-indent true; tab-width 4;

src/libiso8601/000_TopSource.c

@@ -1,7 +1,7 @@
 /* libiso8601/src/libiso8601/000_TopSource.c
  *
- *  (c)2006, Laurence Withers, <l@lwithers.me.uk>.
- *  Released under the GNU GPLv2. See file COPYING or
+ *  (c)2006-2010, Laurence Withers, <l@lwithers.me.uk>.
+ *  Released under the GNU GPLv3. See file COPYING or
  *  http://www.gnu.org/copyleft/gpl.html for details.
 */
 
@@ -10,9 +10,12 @@
 /* Below are all the includes used throughout the library. */
 #include <ctype.h>
 #include <errno.h>
+#include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
 #include <sys/time.h>
 
 /* Useful define to alleviate typos */

src/libiso8601/100_calc.c

@@ -1,25 +1,28 @@
 /* libiso8601/src/libiso8601/100_calc.c
  *
- *  (c)2006, Laurence Withers, <l@lwithers.me.uk>.
- *  Released under the GNU GPLv2. See file COPYING or
+ *  (c)2006-2010, Laurence Withers, <l@lwithers.me.uk>.
+ *  Released under the GNU GPLv3. See file COPYING or
  *  http://www.gnu.org/copyleft/gpl.html for details.
 */
 
 
 
-/* CALCULATION ROUTINES
- *
- *  This file contains calculation routines used internally in the library. Our date format is the
- *  number of days elapsed since 0000-001 (so that date would be 0, -0001-365 would be -1, etc.).
- *  Time is represented as the number of seconds elapsed since midnight at the start of the day. It
- *  is a value between 0 and 86399 (or 86400 for leap seconds).
- */
+/* CALCULATION ROUTINES ********************************************************
+
+ This file contains calculation routines used internally in the library. Our
+date format is the number of days elapsed since 0000-001 (so that date would be
+0, -0001-365 would be -1, etc.).  Time is represented as the number of seconds
+elapsed since midnight at the start of the day. It is a value between 0 and
+86399 (or 86400 for leap seconds).
+
+*******************************************************************************/
 
 #define DAYS_IN_400_YEARS (146097)
 
 
 
-int iso8601_isleap(int year)
+int
+iso8601_isleap(int year)
 {
         if(year % 4) return 0;
         if(year % 100) return 1;
@@ -31,14 +34,15 @@ int iso8601_isleap(int year)
 
 /* struct monthcount, _days_in_month_common[], _days_in_month_leap[]
  *
- *  Tables of the number of days in each month, and the number of days elapsed since the start of
- *  the year for each month.
+ *  Tables of the number of days in each month, and the number of days elapsed
+ *  since the start of the year for each month.
  */
 struct monthcount {
     int elapsed, days;
 };
 
-static const struct monthcount _days_in_month_common[] = {
+static const struct monthcount
+_days_in_month_common[] = {
     { 0, 31 },
     { 31, 28 },
     { 59, 31 },
@@ -53,7 +57,8 @@ static const struct monthcount _days_in_month_common[] = {
     { 334, 31 }
 };
 
-static const struct monthcount _days_in_month_leap[] = {
+static const struct monthcount
+_days_in_month_leap[] = {
     { 0, 31 },
     { 31, 29 },
     { 60, 31 },
@@ -70,7 +75,8 @@ static const struct monthcount _days_in_month_leap[] = {
 
 
 
-static int _days_in_month(int year, int month)
+static int
+_days_in_month(int year, int month)
 {
     const struct monthcount* mc;
 
@@ -85,42 +91,45 @@ static int _days_in_month(int year, int month)
 
 
 
-static void _to_year(int* year, int* days_left, const struct iso8601_date* date)
+static void
+_to_year(int* year, int* days_left, const struct iso8601_date* date)
 {
     div_t qr;
     int ndays = date->day;
 
-    // Each 400 years have 97 leap days, giving 365*400+97 = DAYS_IN_400_YEARS days in 400 years
+    /* Each 400 years have 97 leap days, giving 365*400+97 = DAYS_IN_400_YEARS
+       days in 400 years */
     qr = div(ndays, DAYS_IN_400_YEARS);
     *year = qr.quot * 400;
     ndays = qr.rem;
 
-    // ensure that we always end up with between 0 and 146096 days remaining
+    /* ensure that we always end up with between 0 and 146096 days remaining */
     if(ndays < 0) {
         ndays += DAYS_IN_400_YEARS;
         *year -= 400;
     }
 
-    // we insert `fake' leap days for years 101, 201, 301
+    /* we insert `fake' leap days for years 101, 201, 301 */
     if(ndays >= 36890) ++ndays;
     if(ndays >= 73415) ++ndays;
     if(ndays >= 109940) ++ndays;
 
-    // each remaining 100 year block has 24 leap days, giving 365*100+24 = 36524 days
+    /* each remaining 100 year block has 24 leap days, giving 365*100+24 = 36524
+       days */
     qr = div(ndays, 36525);
     *year += qr.quot * 100;
     ndays = qr.rem;
 
-    // each 4-year block has 1 leap day, giving 365*4 + 1 = 1461 days
+    /* each 4-year block has 1 leap day, giving 365*4 + 1 = 1461 days */
     qr = div(ndays, 1461);
     *year += qr.quot * 4;
     ndays = qr.rem;
 
-    // the first year of a 4-year block has 1 leap day, 366 days
+    /* the first year of a 4-year block has 1 leap day, 366 days */
     if(ndays >= 366) {
-        --ndays; // pretend to have dealt with leap day
+        --ndays; /* pretend to have dealt with leap day */
 
-        // 365 days per remaining year
+        /* 365 days per remaining year */
         qr = div(ndays, 365);
         *year += qr.quot;
         ndays = qr.rem;
@@ -131,15 +140,16 @@ static void _to_year(int* year, int* days_left, const struct iso8601_date* date)
 
 
 
-void iso8601_to_cal(int* year, int* month, int* day, const struct iso8601_date* date)
+void
+iso8601_to_cal(int* year, int* month, int* day, const struct iso8601_date* date)
 {
     const struct monthcount* mc;
     int ndays;
 
-    // perform year calulation
+    /* perform year calulation */
     _to_year(year, &ndays, date);
 
-    // now we simply have number of days elapsed since day 001 in `year'.
+    /* now we simply have number of days elapsed since day 001 in `year'. */
     mc = iso8601_isleap(*year) ? _days_in_month_leap : _days_in_month_common;
     *month = 1;
     while(ndays >= mc->days) {
@@ -152,35 +162,38 @@ void iso8601_to_cal(int* year, int* month, int* day, const struct iso8601_date*
 
 
 
-void iso8601_to_ord(int* year, int* oday, const struct iso8601_date* date)
+void
+iso8601_to_ord(int* year, int* oday, const struct iso8601_date* date)
 {
     int ndays;
 
-    // perform year calcutation
+    /* perform year calcutation */
     _to_year(year, &ndays, date);
 
-    // now we simply have number of days elapsed since day 001 in `year'.
+    /* now we simply have number of days elapsed since day 001 in `year'. */
     *oday = ndays + 1;
 }
 
 
 
-static int _weekday_of_year(int year)
+static int
+_weekday_of_year(int year)
 {
     int w = 6;
 
     /* Algorithm notes:
-     *  - 0 = sun, 1 = mon, ..., 6 = sat
-     *  - 0000-001 is a Saturday, day 6
-     *  - every year we pass gives us one additional day (364 is divisible by 7)
-     *  - but of course every leap year we pass gives us a further day
-     *  - so for every 400 years, we add 497 (400 common years, 97 leap years); 497 % 7 = 0
+     *  • 0 = sun, 1 = mon, ..., 6 = sat
+     *  • 0000-001 is a Saturday, day 6
+     *  • every year we pass gives us one additional day (364 is divisible by 7)
+     *  • but of course every leap year we pass gives us a further day
+     *  • so for every 400 years, we add 497 (400 common years, 97 leap years);
+     *    497 % 7 = 0
      */
     year %= 400;
-    if(year < 0) year += 400; // end up with between 0-399 years left
-    w += year; // excluding leap years, we increase by 1 day a year
-    w += (year + 3) / 4; // there is one leap year for every four years
-    w -= (year - 1) / 100; // but one less for every century over 0
+    if(year < 0) year += 400; /* end up with between 0-399 years left */
+    w += year; /* excluding leap years, we increase by 1 day a year */
+    w += (year + 3) / 4; /* there is one leap year for every four years */
+    w -= (year - 1) / 100; /* but one less for every century over 0 */
     w %= 7;
 
     return w;
@@ -188,42 +201,47 @@ static int _weekday_of_year(int year)
 
 
 
-void iso8601_to_week(int* year, int* week, int* wday, const struct iso8601_date* date)
+void
+iso8601_to_week(int* year, int* week, int* wday,
+    const struct iso8601_date* date)
 {
     int ndays, w, has53 = 0;
     div_t d;
 
-    // perform year and weekday calculation
+    /* perform year and weekday calculation */
     _to_year(year, &ndays, date);
     w = _weekday_of_year(*year);
 
-    // find out what day jan 1 was; from there, we can find the ISO week and year number
+    /* find out what day jan 1 was; from there, we can find the ISO week and
+       year number */
     switch(w) {
-    case 4: // W01 starts XXXY-12-28
+    case 4: /* W01 starts XXXY-12-28 */
         w += 7;
-        has53 = 1; // years starting Thursday have 53 weeks
+        has53 = 1; /* years starting Thursday have 53 weeks */
         break;
 
-    case 5: // W01 starts XXXZ-01-03
-    case 6: // W01 starts XXXZ-01-02
+    case 5: /* W01 starts XXXZ-01-03 */
+    case 6: /* W01 starts XXXZ-01-02 */
         break;
 
-    case 0: // W01 starts XXXZ-01-01
-    case 1: // W01 starts XXXY-12-31
-    case 2: // W01 starts XXXY-12-30
-        w += 7; // for week calculation
+    case 0: /* W01 starts XXXZ-01-01 */
+    case 1: /* W01 starts XXXY-12-31 */
+    case 2: /* W01 starts XXXY-12-30 */
+        w += 7; /* for week calculation */
         break;
 
-    case 3: // W01 starts XXXY-12-29
+    case 3: /* W01 starts XXXY-12-29 */
         w += 7;
-        if(iso8601_isleap(*year)) has53 = 1; // leap years starting Wednesday have 53 weeks
+        if(iso8601_isleap(*year)) has53 = 1; /* leap years starting Wednesday
+                                                have 53 weeks */
     }
 
-    // now we simply add the number of days elapsed since the start of the year, and % 7
+    /* now we simply add the number of days elapsed since the start of the
+       year, and % 7 */
     w += ndays;
-    d = div(w, 7); // w can never be 0
+    d = div(w, 7); /* w can never be 0 */
 
-    // do Sunday correction
+    /* do Sunday correction */
     if(!d.rem) {
         d.rem = 7;
         --d.quot;
@@ -256,54 +274,57 @@ void iso8601_to_week(int* year, int* week, int* wday, const struct iso8601_date*
 
 
 
-int _from_year(struct iso8601_date* date, int year)
+static int
+_from_year(struct iso8601_date* date, int year)
 {
     div_t qr;
 
-    // check for range errors
+    /* check for range errors */
     if(year < -5879609 || year > 5879609) {
         errno = ERANGE;
         return -1;
     }
 
-    // Each 400 years have 97 leap days, giving 365*400+97 = DAYS_IN_400_YEARS days in 400 years
+    /* Each 400 years have 97 leap days, giving 365*400+97 = DAYS_IN_400_YEARS
+       days in 400 years */
     qr = div(year, 400);
     date->day = qr.quot * DAYS_IN_400_YEARS;
     year = qr.rem;
 
-    // ensure we have between 0 and 399 years
+    /* ensure we have between 0 and 399 years */
     if(year < 0) {
         date->day -= DAYS_IN_400_YEARS;
         year += 400;
     }
 
-    // excluding leap days, there are 365 days per year
+    /* excluding leap days, there are 365 days per year */
     date->day += 365 * year;
-    date->day += (year + 3) / 4; // there is one leap year for every four years
-    date->day -= (year - 1) / 100; // but one less for every century over 0
+    date->day += (year + 3) / 4; /* one leap year for every four years */
+    date->day -= (year - 1) / 100; /* but one less for every century over 0 */
     return 0;
 }
 
 
 
-int iso8601_from_cal(struct iso8601_date* date, int year, int month, int day)
+int
+iso8601_from_cal(struct iso8601_date* date, int year, int month, int day)
 {
     const struct monthcount* mc;
 
-    // check for domain errors
+    /* check for domain errors */
     mc = iso8601_isleap(year) ? _days_in_month_leap : _days_in_month_common;
     if(month < 1 || month > 12 || day < 1 || day > mc[month - 1].days) {
         errno = EDOM;
         return -1;
     }
 
-    // perform year calculation
+    /* perform year calculation */
     if(_from_year(date, year)) return -1;
 
-    // now get number of days elapsed up to start of month
+    /* now get number of days elapsed up to start of month */
     date->day += mc[month - 1].elapsed;
 
-    // and add number of days elapsed sinced start of month
+    /* and add number of days elapsed sinced start of month */
     date->day += day - 1;
 
     return 0;
@@ -311,18 +332,19 @@ int iso8601_from_cal(struct iso8601_date* date, int year, int month, int day)
 
 
 
-int iso8601_from_ord(struct iso8601_date* date, int year, int oday)
+int
+iso8601_from_ord(struct iso8601_date* date, int year, int oday)
 {
-    // check for domain errors
+    /* check for domain errors */
     if(oday < 1 || oday > (iso8601_isleap(year) ? 366 : 365)) {
         errno = EDOM;
         return -1;
     }
 
-    // perform year calculation
+    /* perform year calculation */
     if(_from_year(date, year)) return -1;
 
-    // now simply add number of days elapsed this year
+    /* now simply add number of days elapsed this year */
     date->day += oday - 1;
 
     return 0;
@@ -330,18 +352,19 @@ int iso8601_from_ord(struct iso8601_date* date, int year, int oday)
 
 
 
-int iso8601_from_week(struct iso8601_date* date, int isoyear, int week, int wday)
+int
+iso8601_from_week(struct iso8601_date* date, int isoyear, int week, int wday)
 {
     int day1off, maxwk;
 
-    // compute year part
+    /* compute year part */
     _from_year(date, isoyear);
 
-    // 400-year cycle; ensure we're between 0-400 years
+    /* 400-year cycle; ensure we're between 0-400 years */
     isoyear %= 400;
     if(isoyear < 0) isoyear += 400;
 
-    // domain check
+    /* domain check */
     maxwk = (((isoyear % 7) == 52) || ((isoyear % 28) == 24)) ? 53 : 52;
     if(wday < 1 || wday > 7 || week < 1 || week > maxwk) {
         errno = EDOM;
@@ -349,18 +372,20 @@ int iso8601_from_week(struct iso8601_date* date, int isoyear, int week, int wday
     }
 
     /* Algorithm notes:
-     *  We now compute the offset between the start day of the ISO year and the start day of the 
-     *  real year. Year 0000 starts on a Saturday, meaning the ISO year 0000 starts on 0000-003
-     *  (offset of +2 days). Each year reduces the offset by one day, and each leap year reduces it
-     *  by a further day; the offset wraps from -3 to +3.
+     *  We now compute the offset between the start day of the ISO year and
+     *  the start day of the real year. Year 0000 starts on a Saturday, meaning
+     *  the ISO year 0000 starts on 0000-003 (offset of +2 days). Each year
+     *  reduces the offset by one day, and each leap year reduces it by a
+     *  further day; the offset wraps from -3 to +3.
      */
-    day1off = 2 - isoyear; // reduce offset by 1 for each year
-    day1off += (isoyear - 1) / 100; // cancel out 1 leap year for each century past the first
-    day1off -= (isoyear + 3) / 4; // 1 leap year every 4 years
+    day1off = 2 - isoyear; /* reduce offset by 1 for each year */
+    day1off += (isoyear - 1) / 100; /* cancel out 1 leap year for each century
+                                       past the first */
+    day1off -= (isoyear + 3) / 4; /* 1 leap year every 4 years */
     day1off %= 7;
     if(day1off < -3) day1off += 7;
 
-    // now simply add in the day offset and days/weeks elapsed
+    /* now simply add in the day offset and days/weeks elapsed */
     date->day += day1off + (week - 1) * 7 + wday - 1;
 
     return 0;
@@ -368,11 +393,13 @@ int iso8601_from_week(struct iso8601_date* date, int isoyear, int week, int wday
 
 
 
-void iso8601_to_clocktime(int* hour, int* min, int* sec, const struct iso8601_date* date)
+void
+iso8601_to_clocktime(int* hour, int* min, int* sec,
+    const struct iso8601_date* date)
 {
     div_t qr;
 
-    // special case: leap second
+    /* special case: leap second */
     if(date->sec == 86400) {
         *hour = 23;
         *min = 59;
@@ -380,7 +407,7 @@ void iso8601_to_clocktime(int* hour, int* min, int* sec, const struct iso8601_da
         return;
     }
 
-    // normal case
+    /* normal case */
     qr = div(date->sec, 3600);
     *hour = qr.quot;
     qr = div(qr.rem, 60);
@@ -390,21 +417,22 @@ void iso8601_to_clocktime(int* hour, int* min, int* sec, const struct iso8601_da
 
 
 
-int iso8601_from_clocktime(struct iso8601_date* date, int hour, int min, int sec)
+int
+iso8601_from_clocktime(struct iso8601_date* date, int hour, int min, int sec)
 {
-    // special case: leap second
+    /* special case: leap second */
     if(hour == 23 && min == 59 && sec == 60) {
         date->sec = 86400;
         return 0;
     }
 
-    // domain check
+    /* domain check */
     if(hour < 0 || hour > 23 || min < 0 || min > 59 || sec < 0 || sec > 59) {
         errno = EDOM;
         return -1;
     }
     
-    // normal calculation
+    /* normal calculation */
     date->sec = hour * 3600 + min * 60 + sec;
     return 0;
 }

src/libiso8601/100_leap.c

@@ -1,59 +1,92 @@
 /* libiso8601/src/libiso8601/100_leap.c
  *
- *  (c)2006, Laurence Withers, <l@lwithers.me.uk>.
- *  Released under the GNU GPLv2. See file COPYING or
+ *  (c)2006-2010, Laurence Withers, <l@lwithers.me.uk>.
+ *  Released under the GNU GPLv3. See file COPYING or
  *  http://www.gnu.org/copyleft/gpl.html for details.
 */
 
 
 
-static int leap_second_days[] = {
-    720439, // 19720630
-    720623, // 19721231
-    720988, // 19731231
-    721353, // 19741231
-    721718, // 19751231
-    722084, // 19761231
-    722449, // 19771231
-    722814, // 19781231
-    723179, // 19791231
-    723726, // 19810630
-    724091, // 19820630
-    724456, // 19830630
-    725187, // 19850630
-    726101, // 19871231
-    726832, // 19891231
-    727197, // 19901231
-    727744, // 19920630
-    728109, // 19930630
-    728474, // 19940630
-    729023, // 19951231
-    729570, // 19970630
-    730119, // 19981231
-    732676  // 20051231
+/* leap_second_days_table[]
+ *  This is a sorted array of days (in libiso8601 format) on which a positive
+ *  leap second occurred. This table is built in to the library, but may be
+ *  overridden at runtime by changing what ‘leap_second_days’ points to. There
+ *  should be no other references to this table, therefore.
+ */
+static int
+leap_second_days_table[] = {
+    720439, /* 1972-06-30 */
+    720623, /* 1972-12-31 */
+    720988, /* 1973-12-31 */
+    721353, /* 1974-12-31 */
+    721718, /* 1975-12-31 */
+    722084, /* 1976-12-31 */
+    722449, /* 1977-12-31 */
+    722814, /* 1978-12-31 */
+    723179, /* 1979-12-31 */
+    723726, /* 1981-06-30 */
+    724091, /* 1982-06-30 */
+    724456, /* 1983-06-30 */
+    725187, /* 1985-06-30 */
+    726101, /* 1987-12-31 */
+    726832, /* 1989-12-31 */
+    727197, /* 1990-12-31 */
+    727744, /* 1992-06-30 */
+    728109, /* 1993-06-30 */
+    728474, /* 1994-06-30 */
+    729023, /* 1995-12-31 */
+    729570, /* 1997-06-30 */
+    730119, /* 1998-12-31 */
+    732676, /* 2005-12-31 */
+    733772, /* 2008-12-31 */
+    735049, /* 2012-06-30 */
+    736144, /* 2015-06-30 */
 };
 
 
 
-int iso8601_seconds_leap(const struct iso8601_date* date)
-{
-    int num_ly = 0, i = 0;
+/* leap_second_days[], leap_second_days_num
+ *  Pointer to an array (and number of elements in the array) representing the
+ *  table of positive leap seconds. The array is sorted and contains libiso8601
+ *  day numbers of days with positive leap seconds.
+ */
+static int*
+leap_second_days = leap_second_days_table;
+static int
+leap_second_days_num = sizeof(leap_second_days_table) / sizeof(int);
 
-    num_ly = sizeof(leap_second_days) / sizeof(int);
-    for(i = 0; i < num_ly; ++i) if(leap_second_days[i] == date->day) return 86401;
+
+
+/* iso8601_seconds_leap()
+ *  Returns the number of seconds that elapse on a given date, which requires us
+ *  to search the table of leap seconds to see if we need to return a special
+ *  case.
+ */
+int
+iso8601_seconds_leap(const struct iso8601_date* date)
+{
+    int i;
+    for(i = 0; i < leap_second_days_num; ++i) {
+        if(leap_second_days[i] == date->day) return 86401;
+    }
     return 86400;
 }
 
 
 
-static int _leap_elapsed_day(int sday, int eday)
+/* _leap_elapsed_day()
+ *  Returns the number of leap seconds that have elapsed between ‘sday’ (start
+ *  day) and ‘eday’ (end day), both in libiso8601 format.
+ */
+static int
+_leap_elapsed_day(int sday, int eday)
 {
     int spos, epos;
 
-    for(spos = 0; (unsigned)spos < sizeof(leap_second_days) / sizeof(int); ++spos) {
+    for(spos = 0; spos < leap_second_days_num; ++spos) {
         if(sday <= leap_second_days[spos]) break;
     }
-    for(epos = 0; (unsigned)epos < sizeof(leap_second_days) / sizeof(int); ++epos) {
+    for(epos = 0; epos < leap_second_days_num; ++epos) {
         if(eday <= leap_second_days[epos]) break;
     }
 
@@ -62,13 +95,121 @@ static int _leap_elapsed_day(int sday, int eday)
 
 
 
-int iso8601_leap_elapsed(const struct iso8601_date* start, const struct iso8601_date* end)
+/* iso8601_leap_elapsed()
+ *  Wrapper around _leap_elapsed_day().
+ */
+int
+iso8601_leap_elapsed(const struct iso8601_date* start,
+    const struct iso8601_date* end)
 {
     return _leap_elapsed_day(start->day, end->day);
 }
 
 
 
+/* leap_table_free_old
+ *  If set, then when we update the leap table, we should free the old array.
+ *  Initially clear so that we don't free our static built-in table.
+ */
+static int leap_table_free_old = 0;
+
+
+
+/* iso8601_leap_table_set()
+ *  Switch to using a new table of leap seconds, possibly freeing the old one.
+ */
+void
+iso8601_leap_table_set(int* new_table, int new_size)
+{
+    if(leap_table_free_old) free(leap_second_days);
+    leap_table_free_old = 0;
+
+    leap_second_days = new_table;
+    leap_second_days_num = new_size;
+}
+
+
+
+/* leap_table_signature
+ *  The first 8 bytes of a leap second table must match this string, otherwise
+ *  the file is taken not to be of the correct format.
+ */
+static const char*
+leap_table_signature = "/O9PdPZI";
+
+
+
+/* iso8601_leap_table_load()
+ *  Loads a new table of leap seconds from disk. Ensures the signature of the
+ *  given file matches ‘leap_table_signature’, and does some basic sanity
+ *  checking (file in sorted order etc.).
+ */
+int
+iso8601_leap_table_load(const char* fname)
+{
+    struct stat st;
+    int fd, saved_errno, i, new_size, * days = 0;
+    char buf[12];
+
+    if(!fname) fname = DEFAULT_LEAP_TABLE;
+
+    if(stat(fname, &st)) return -1;
+    if(st.st_size < 12) {
+        errno = EINVAL;
+        return -1;
+    }
+
+    fd = open(fname, O_RDONLY);
+    if(fd == -1) return -1;
+
+    if(TEMP_FAILURE_RETRY( read(fd, buf, 12) ) != 12) goto outerr;
+    if(memcmp(buf, leap_table_signature, 8)) {
+        errno = EINVAL;
+        return -1;
+    }
+
+#define GET_UINT32(_from) ( \
+    ( ((uint8_t*)_from)[0] << 24 ) | \
+    ( ((uint8_t*)_from)[1] << 16 ) | \
+    ( ((uint8_t*)_from)[2] << 8 ) | \
+    ( ((uint8_t*)_from)[3] ) \
+)
+
+    new_size = GET_UINT32(buf + 8);
+    if((12 + new_size * 4) != st.st_size) {
+        errno = EINVAL;
+        goto outerr;
+    }
+
+    days = malloc(sizeof(int) * new_size);
+    if(!days) goto outerr;
+
+    for(i = 0; i < new_size; ++i) {
+        if(TEMP_FAILURE_RETRY( read(fd, buf, 4) ) != 4) goto outerr;
+        days[i] = GET_UINT32(buf);
+        if(i && days[i] <= days[i - 1]) {
+            errno = EINVAL;
+            goto outerr;
+        }
+    }
+
+    TEMP_FAILURE_RETRY( close(fd) );
+    iso8601_leap_table_set(days, new_size);
+    leap_table_free_old = 1;
+    return 0;
+
+#undef GET_UINT32
+
+  outerr:
+    saved_errno = errno;
+    free(days);
+    TEMP_FAILURE_RETRY( close(fd) );
+    errno = saved_errno;
+    return -1;
+}
+
+
+
 /* options for text editors
 kate: replace-trailing-space-save true; space-indent true; tab-width 4;
 vim: expandtab:ts=4:sw=4

src/libiso8601/100_types.h

@@ -1,7 +1,7 @@
 /* libiso8601/src/libiso8601/100_types.h
  *
- *  (c)2006, Laurence Withers, <l@lwithers.me.uk>.
- *  Released under the GNU GPLv2. See file COPYING or
+ *  (c)2006-2010, Laurence Withers, <l@lwithers.me.uk>.
+ *  Released under the GNU GPLv3. See file COPYING or
  *  http://www.gnu.org/copyleft/gpl.html for details.
 */
 
@@ -9,19 +9,20 @@
 
 /*! \brief Date/time point.
 
-This structure contains the details to represent a specific instant on the UTC timescale. It uses
-Jan 1, year 0000 as the origin (when \a day will be 0). \a sec is the number of seconds elapsed
-since start of day, and \a nsec is the number of nanoseconds elapsed since the start of the current
-second.
+This structure contains the details to represent a specific instant on the UTC
+timescale. It uses Jan 1, year 0000 as the origin (when \a day will be 0). \a
+sec is the number of seconds elapsed since start of day, and \a nsec is the
+number of nanoseconds elapsed since the start of the current second.
 
-We correctly deal with leap seconds by encoding 23:59:60 as having a \a sec field of 86400.
+We correctly deal with leap seconds by encoding 23:59:60 as having a \a sec
+field of 86400.
 
 */
 struct iso8601_date {
     /*! \brief Number of nanoseconds elapsed since start of second. */
     int32_t nsec;
 
-    /*! \brief Number of days elapsed since Jan 1, year 0000. May be negative. */
+    /*! \brief Number of days elapsed since Jan 1, year 0000. May be negative.*/
     int32_t day;
 
     /*! \brief Number of seconds elapsed since start of day. */
@@ -31,10 +32,12 @@ struct iso8601_date {
 
 
 /*! \brief Date (day portion) precision.
+\ingroup parser
 
-This enumeration will record how precisely the date was specified, as well as the format in use. It
-allows the library to determine the earliest and latest dates that could possibly be represented
-with the given input and also allows the output format to match the input format.
+This enumeration will record how precisely the date was specified, as well as
+the format in use. It allows the library to determine the earliest and latest
+dates that could possibly be represented with the given input and also allows
+the output format to match the input format.
 
 */
 enum iso8601_date_prec {
@@ -55,43 +58,52 @@ enum iso8601_date_prec {
 
     /*! \brief Year, week and weekday specified (week format). */
     iso8601_prec_wday
-}date_prec;
+};
 
 
 
 /*! \brief Time precision.
+\ingroup parser
 
-This enumeration records how precisely the time was specified as well as its format. The fractional
-format will record whether it was the hour, minute or second that was specified with a fractional
-part, allowing a processed date/time to be presented to the user in the format it was originally
+This enumeration records how precisely the time was specified as well as its
+format. The fractional format will record whether it was the hour, minute or
+second that was specified with a fractional part, allowing a processed
+date/time to be presented to the user in the format it was originally
 encountered.
 
 */
 enum iso8601_time_prec {
+    /*! \brief Don't display date. */
     iso8601_prec_none,
+    /*! \brief Display integer part of hour. */
     iso8601_prec_hour,
+    /*! \brief Display hour and integer part of minute. */
     iso8601_prec_min,
+    /*! \brief Display hour, minute and integer part of second. */
     iso8601_prec_sec,
+    /*! \brief Display hour and fractional part of hour. */
     iso8601_prec_hourfrac,
+    /*! \brief Display hour, minute and fractional part of minute. */
     iso8601_prec_minfrac,
+    /*! \brief Display hour, minute, second and nanoseconds. */
     iso8601_prec_secfrac
-}time_prec;
+};
 
 
 
 /*! \brief Date/time formatting details.
 
-This structure simply records details related to the formatting (and precision) of a date/time
-structure. The structure can be filled out by the parser so that a program's output can match
-the format of its input. Alternatively it can be controlled by the program to provide a consistent
-output format.
+This structure simply records details related to the formatting (and precision)
+of a date/time structure. The structure can be filled out by the parser so that
+a program's output can match the format of its input. Alternatively it can be
+controlled by the program to provide a consistent output format.
 
 */
 struct iso8601_details {
-    /*! \brief Date precision (enum iso8601_date_prec). */
+    /*! \brief Date precision (\ref iso8601_date_prec). */
     uint8_t date_prec;
 
-    /*! \brief Time precision (enum iso8601_time_prec). */
+    /*! \brief Time precision (\ref iso8601_time_prec). */
     uint8_t time_prec;
 
     /*! \brief Flag: non-zero if extended format should be used. */
@@ -105,9 +117,10 @@ struct iso8601_details {
 
 /*! \brief Short period elapsed time.
 
-This structure contains the details of an elapsed time period, split into seconds and nanoseconds.
-None of its components can ever be negative. This is only capable of representing short (compared to
-struct iso8601_date's range) periods of up to approximately 136 years.
+This structure contains the details of an elapsed time period, split into
+seconds and nanoseconds.  None of its components can ever be negative. This is
+only capable of representing short (compared to struct iso8601_date's range)
+periods of up to approximately 136 years.
 
 */
 struct iso8601_elapsed {
@@ -121,5 +134,5 @@ struct iso8601_elapsed {
 
 /* options for text editors
 kate: replace-trailing-space-save true; space-indent true; tab-width 4;
-vim: expandtab:ts=4:sw=4
+vim: expandtab:ts=4:sw=4:syntax=ch.doxygen
 */

src/libiso8601/200_parser.c

@@ -1,24 +1,25 @@
 /* libiso8601/src/libiso8601/200_parser.c
  *
- *  (c)2006, Laurence Withers, <l@lwithers.me.uk>.
- *  Released under the GNU GPLv2. See file COPYING or
+ *  (c)2006-2010, Laurence Withers, <l@lwithers.me.uk>.
+ *  Released under the GNU GPLv3. See file COPYING or
  *  http://www.gnu.org/copyleft/gpl.html for details.
 */
 
 
 
-int iso8601_parse(const char* str, struct iso8601_date* earliest, struct iso8601_date* latest,
-    struct iso8601_details* details)
+int
+iso8601_parse(const char* str, struct iso8601_date* earliest,
+    struct iso8601_date* latest, struct iso8601_details* details)
 {
     enum {
         state_none,
-        state_year, // e.g. `2006' or `2006123'
-        state_date2, // 2nd component of date, e.g. `2006-' or `2006-1'
-        state_day, // e.g. `2006-01-' or `2006-01-01'
-        state_week_basic, // e.g. `2006W' or `2006W123'
-        state_week_extended, // e.g. `2006-W' or `2006-W31'
-        state_week_day, // e.g. `2006-W31-'
-        state_week_done, // `2006-W31-1'
+        state_year, /* e.g. `2006' or `2006123' */
+        state_date2, /* 2nd component of date, e.g. `2006-' or `2006-1' */
+        state_day, /* e.g. `2006-01-' or `2006-01-01' */
+        state_week_basic, /* e.g. `2006W' or `2006W123' */
+        state_week_extended, /* e.g. `2006-W' or `2006-W31' */
+        state_week_day, /* e.g. `2006-W31-' */
+        state_week_done, /* `2006-W31-1' */
         state_time_basic,
         state_time_hour,
         state_time_min,
@@ -34,8 +35,9 @@ int iso8601_parse(const char* str, struct iso8601_date* earliest, struct iso8601
 
     div_t qr;
     char ch;
-    int num = 0, neg = 0, dig = 0, tz_neg = 0, nsec = -1, nsec_dig = -1, leap_sec_req = 0;
-    int y = 0, m = -1, d = -1, w = -1, wd = -1, hour = -1, min = -1, sec = -1, tz_sec = 0;
+    int num = 0, neg = 0, dig = 0, tz_neg = 0, nsec = -1, nsec_dig = -1,
+        leap_sec_req = 0, y = 0, m = -1, d = -1, w = -1, wd = -1, hour = -1,
+        min = -1, sec = -1, tz_sec = 0;
     double frac;
     struct iso8601_elapsed elapsed;
 
@@ -436,7 +438,8 @@ int iso8601_parse(const char* str, struct iso8601_date* earliest, struct iso8601
             case '-':
                 tz_neg = -1;
             case '+':
-                state = (state == state_time_nsec_basic) ? state_tz_basic : state_tz_hour;
+                state = (state == state_time_nsec_basic) ?
+                    state_tz_basic : state_tz_hour;
                 break;
             }
             break;
@@ -544,7 +547,8 @@ done:
     if(m != -1) {
         if(d == -1) {
             ERROR_IF(earliest && iso8601_from_cal(earliest, y, m, 1));
-            ERROR_IF(latest && iso8601_from_cal(latest, y, m, _days_in_month(y, m)));
+            ERROR_IF(latest && iso8601_from_cal(latest, y, m,
+                _days_in_month(y, m)));
             if(details) details->date_prec = iso8601_prec_month;
 
         } else {
@@ -608,7 +612,8 @@ done:
 
     } else if(min != -1) {
         if(nsec_dig == -1) {
-            ERROR_IF(earliest && iso8601_from_clocktime(earliest, hour, min, 0));
+            ERROR_IF(earliest && iso8601_from_clocktime(earliest,
+                hour, min, 0));
             ERROR_IF(latest && iso8601_from_clocktime(latest, hour, min, 59));
             if(latest) latest->nsec = 999999999;
             if(details) details->time_prec = iso8601_prec_min;
@@ -617,7 +622,8 @@ done:
             frac = nsec * 60.0 / 1e9;
             sec = (int)frac;
             nsec = (frac - sec) * 1e9;
-            ERROR_IF(earliest && iso8601_from_clocktime(earliest, hour, min, sec));
+            ERROR_IF(earliest && iso8601_from_clocktime(earliest,
+                hour, min, sec));
             if(earliest) earliest->nsec = nsec;
             ERROR_IF(latest && iso8601_from_clocktime(latest, hour, min, sec));
             if(latest) latest->nsec = nsec;
@@ -639,7 +645,8 @@ done:
             frac *= 60;
             sec = (int)frac;
             nsec = (frac - sec) * 1e9;
-            ERROR_IF(earliest && iso8601_from_clocktime(earliest, hour, min, sec));
+            ERROR_IF(earliest && iso8601_from_clocktime(earliest,
+                hour, min, sec));
             if(earliest) earliest->nsec = nsec;
             ERROR_IF(latest && iso8601_from_clocktime(latest, hour, min, sec));
             if(latest) latest->nsec = nsec;
@@ -676,7 +683,8 @@ done:
 
 
 
-int iso8601_invalid(const struct iso8601_date* date)
+int
+iso8601_invalid(const struct iso8601_date* date)
 {
     return date->nsec < 0
         || date->nsec >= BILLION

src/libiso8601/200_parser.h

@@ -1,7 +1,7 @@
 /* libiso8601/src/libiso8601/200_parser.h
  *
- *  (c)2006, Laurence Withers, <l@lwithers.me.uk>.
- *  Released under the GNU GPLv2. See file COPYING or
+ *  (c)2006-2010, Laurence Withers, <l@lwithers.me.uk>.
+ *  Released under the GNU GPLv3. See file COPYING or
  *  http://www.gnu.org/copyleft/gpl.html for details.
 */
 
@@ -9,31 +9,41 @@
 
 /*! \defgroup parser Parsing, printing and validation routines.
 
-These routines are used for parsing an ISO8601 date/time string into the internal structure used
-to represent them, and for validating such dates/times.
+These routines are used for parsing an ISO8601 date/time string into the
+internal structure used to represent them, and for validating such dates/times.
 
 */
 /*!@{*/
 
+
+
 /*! \brief Parse ISO8601 date/time.
 
 \param str The input string. Whitespace will be stripped.
-\param[out] earliest The earliest possible time the string could represent. May be 0.
-\param[out] latest The latest possible time the string could represent. May be 0.
-\param[out] details Stores details such as the precision to which the time/date were specified. May
+\param[out] earliest The earliest possible time the string could represent. May
     be 0.
+\param[out] latest The latest possible time the string could represent. May be
+    0.
+\param[out] details Stores details such as the precision to which the time/date
+    were specified. May be 0.
 \retval -1 on error.
 \retval 0 on success.
 
-Parses a string containing the ISO8601 date/time. Deals with any format of date, optionally storing
-the details in \a details. The time may be partial, in which case this function returns the earliest
-and latest times that could possibly be represented by the string.
+Parses a string containing the ISO8601 date/time. Deals with any format of
+date, optionally storing the details in \a details. The time may be partial, in
+which case this function returns the earliest and latest times that could
+possibly be represented by the string.
 
-Note that this function will accept leap seconds (23:59:60) on days on which they occurred.
+Note that this function will accept leap seconds (23:59:60) on days on which
+they occurred.
 
 */
-int iso8601_parse(const char* str, struct iso8601_date* earliest, struct iso8601_date* latest,
-    struct iso8601_details* details);
+int iso8601_parse(const char* str, struct iso8601_date* earliest,
+    struct iso8601_date* latest, struct iso8601_details* details)
+#ifndef DOXYGEN
+    __attribute__((nonnull(1),warn_unused_result))
+#endif
+;
 
 
 
@@ -45,12 +55,17 @@ int iso8601_parse(const char* str, struct iso8601_date* earliest, struct iso8601
 \param details Formatting details (may be 0).
 \returns Pointer to buffer (\a str).
 
-Formats and prints an ISO8601 date, optionally using the details in \a details. Will always return
-a null-terminated result, even if that means truncating the output to fit the buffer.
+Formats and prints an ISO8601 date, optionally using the details in \a details.
+Will always return a null-terminated result, even if that means truncating the
+output to fit the buffer.
 
 */
 char* iso8601_print(char* str, int amt, const struct iso8601_date* date, 
-    const struct iso8601_details* details);
+    const struct iso8601_details* details)
+#ifndef DOXYGEN
+    __attribute__((nonnull(1,3)))
+#endif
+;
 
 
 
@@ -60,18 +75,21 @@ char* iso8601_print(char* str, int amt, const struct iso8601_date* date,
 \retval -1 if not valid.
 \retval 0 if valid.
 
-Checks the details of \a date to ensure that they are sensible. This involves checking that \a sec
-is in the range 0 to 86399 (or 86400 if there is a leap second), and that \a nsec is in the range 0
-to 999999999.
+Checks the details of \a date to ensure that they are sensible. This involves
+checking that \a sec is in the range 0 to 86399 (or 86400 if there is a leap
+second), and that \a nsec is in the range 0 to 999999999.
 
 */
-int iso8601_invalid(const struct iso8601_date* date);
+int iso8601_invalid(const struct iso8601_date* date)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
 
 
 
 /*!@}*/
-
 /* options for text editors
 kate: replace-trailing-space-save true; space-indent true; tab-width 4;
-vim: expandtab:ts=4:sw=4
+vim: expandtab:ts=4:sw=4:syntax=ch.doxygen
 */

src/libiso8601/200_print.c

@@ -1,13 +1,18 @@
-/* libiso8601/src/libiso8601/print.c
+/* libiso8601/src/libiso8601/200_print.c
  *
- *  (c)2006, Laurence Withers, <l@lwithers.me.uk>.
- *  Released under the GNU GPLv2. See file COPYING or
+ *  (c)2006-2010, Laurence Withers, <l@lwithers.me.uk>.
+ *  Released under the GNU GPLv3. See file COPYING or
  *  http://www.gnu.org/copyleft/gpl.html for details.
 */
 
 
 
-static const struct iso8601_details _default_details = {
+/* _default_details
+ *  If the user doesn't pass precision details to iso8601_print(), these are
+ *  used instead.
+ */
+static const struct iso8601_details
+_default_details = {
     iso8601_prec_day,
     iso8601_prec_sec,
     1,
@@ -16,7 +21,8 @@ static const struct iso8601_details _default_details = {
 
 
 
-char* iso8601_print(char* str, int amt, const struct iso8601_date* date, 
+char*
+iso8601_print(char* str, int amt, const struct iso8601_date* date, 
     const struct iso8601_details* details)
 {
     int y, m, d, ret = 0, extended;
@@ -27,10 +33,10 @@ char* iso8601_print(char* str, int amt, const struct iso8601_date* date,
 
     str_orig = str;
 
-    // use default details if none provided
+    /* use default details if none provided */
     if(!details) details = &_default_details;
 
-    // adjust output for timezone
+    /* adjust output for timezone */
     dttz = *date;
     if(details->tz_sec) {
         elapsed.sec = details ? details->tz_sec : 0;
@@ -38,7 +44,7 @@ char* iso8601_print(char* str, int amt, const struct iso8601_date* date,
         iso8601_add_elapsed(&dttz, &elapsed);
     }
 
-    // determine whether or not to force extended output
+    /* determine whether or not to force extended output */
     iso8601_to_cal(&y, &m, &d, &dttz);
     extended = details->extended || y < 0 || y > 9999;
 
@@ -55,27 +61,32 @@ char* iso8601_print(char* str, int amt, const struct iso8601_date* date,
 
     case iso8601_prec_day:
         if(y < 0) ret = snprintf(str, amt, "%05d-%02d-%02d", y, m, d);
-        else ret = snprintf(str, amt, extended ? "%04d-%02d-%02d" : "%04d%02d%02d", y, m, d);
+        else ret = snprintf(str, amt, extended ?
+            "%04d-%02d-%02d" : "%04d%02d%02d", y, m, d);
         break;
 
     case iso8601_prec_ord:
         iso8601_to_ord(&y, &d, &dttz);
         if(y < 0) ret = snprintf(str, amt, "%05d-%03d", y, d);
-        else ret = snprintf(str, amt, extended ? "%04d-%03d" : "%04d%03d", y, d);
+        else ret = snprintf(str, amt, extended ?
+            "%04d-%03d" : "%04d%03d", y, d);
         break;
 
     case iso8601_prec_week:
         iso8601_to_week(&y, &m, &d, &dttz);
-        extended = y < 0 || y > 9999 || details->extended; // ISO year is different
+        /* note: ISO year can differ, so recompute extended flag */
+        extended = y < 0 || y > 9999 || details->extended;
         if(y < 0) snprintf(str, amt, "%05d-W%02d", y, m);
         else snprintf(str, amt, extended ? "%04d-W%02d" : "%04dW%02d", y, m);
         return str_orig;
 
     case iso8601_prec_wday:
         iso8601_to_week(&y, &m, &d, &dttz);
-        extended = y < 0 || y > 9999 || details->extended; // ISO year is different
+        /* note: ISO year can differ, so recompute extended flag */
+        extended = y < 0 || y > 9999 || details->extended;
         if(y < 0) ret = snprintf(str, amt, "%05d-W%02d-%d", y, m, d);
-        else ret = snprintf(str, amt, extended ? "%04d-W%02d-%d" : "%04dW%02d%d", y, m, d);
+        else ret = snprintf(str, amt, extended ?
+            "%04d-W%02d-%d" : "%04dW%02d%d", y, m, d);
         break;
     }
 
@@ -111,7 +122,8 @@ char* iso8601_print(char* str, int amt, const struct iso8601_date* date,
         break;
 
     case iso8601_prec_sec:
-        ret = snprintf(str, amt, extended ? "T%02d:%02d:%02d" : "T%02d%02d%02d", y, m, d);
+        ret = snprintf(str, amt, extended ?
+            "T%02d:%02d:%02d" : "T%02d%02d%02d", y, m, d);
         break;
 
     case iso8601_prec_hourfrac:
@@ -121,24 +133,22 @@ char* iso8601_print(char* str, int amt, const struct iso8601_date* date,
 
     case iso8601_prec_minfrac:
         frac = m + (d + date->nsec / 1e9) / 60.0;
-        ret = snprintf(str, amt, extended ? "T%02d:%#012.9f" : "T%02d%#012.9f", y, frac);
+        ret = snprintf(str, amt, extended ?
+            "T%02d:%#012.9f" : "T%02d%#012.9f", y, frac);
         break;
 
     case iso8601_prec_secfrac:
         frac = d + date->nsec / 1e9;
-        ret = snprintf(str, amt, extended ? "T%02d:%02d:%#012.9f" : "T%02d%02d%#012.9f", y, m, frac);
+        ret = snprintf(str, amt, extended ?
+            "T%02d:%02d:%#012.9f" : "T%02d%02d%#012.9f", y, m, frac);
         break;
     }
 
-    if(ret < 1 || ret >= amt) return str_orig;
+    if(ret < 1 || (ret + 1) >= amt) return str_orig;
     str += ret;
     amt -= ret;
 
     if(details->tz_sec) {
-        if(!--amt) {
-            *str = 0;
-            return str_orig;
-        }
         if(details->tz_sec < 0) {
             *str++ = '-';
             ret = -details->tz_sec;
@@ -146,6 +156,7 @@ char* iso8601_print(char* str, int amt, const struct iso8601_date* date,
             *str++ = '+';
             ret = details->tz_sec;
         }
+        --amt;
 
         y = ret / 3600;
         ret -= y * 3600;
@@ -153,12 +164,14 @@ char* iso8601_print(char* str, int amt, const struct iso8601_date* date,
         ret -= m * 60;
         d = ret;
 
-        if(d) snprintf(str, amt, extended ? "%02d:%02d:%02d" : "%02d%02d%02d", y, m, d);
-        else if(m) snprintf(str, amt, extended ? "%02d:%02d" : "%02d%02d", y, m);
+        if(d) snprintf(str, amt, extended ?
+            "%02d:%02d:%02d" : "%02d%02d%02d", y, m, d);
+        else if(m) snprintf(str, amt, extended ?
+            "%02d:%02d" : "%02d%02d", y, m);
         else snprintf(str, amt, "%02d", y);
     } else {
         *str++ = 'Z';
-        if(amt > 1) *str = 0;
+        *str++ = 0;
     }
     
     return str_orig;

src/libiso8601/400_c_library.c

@@ -1,16 +1,17 @@
 /* libiso8601/src/libiso8601/400_c_library.c
  *
- *  (c)2006, Laurence Withers, <l@lwithers.me.uk>.
- *  Released under the GNU GPLv2. See file COPYING or
+ *  (c)2006-2010, Laurence Withers, <l@lwithers.me.uk>.
+ *  Released under the GNU GPLv3. See file COPYING or
  *  http://www.gnu.org/copyleft/gpl.html for details.
 */
 
-// days between 0000-001 and 1970-001 (the unix epoch)
+/* days between 0000-001 and 1970-001 (the unix epoch) */
 #define EPOCH_GDAY (719528)
 
 
 
-void iso8601_now(struct iso8601_date* date, struct iso8601_details* details)
+void
+iso8601_now(struct iso8601_date* date, struct iso8601_details* details)
 {
     static int use_gettimeofday = 0;
     struct timespec ts;
@@ -21,7 +22,8 @@ void iso8601_now(struct iso8601_date* date, struct iso8601_details* details)
     if(use_gettimeofday || clock_gettime(CLOCK_REALTIME, &ts)) {
         use_gettimeofday = 1;
         gettimeofday(&tv, 0);
-        ts.tv_sec = tv.tv_sec;
+        if(tv.tv_sec < 0) ts.tv_sec = 0;
+        else ts.tv_sec = tv.tv_sec;
         ts.tv_nsec = tv.tv_usec * 1000L;
     }
 
@@ -44,11 +46,44 @@ void iso8601_now(struct iso8601_date* date, struct iso8601_details* details)
 
 
 
-void iso8601_from_ts(struct iso8601_date* date, const struct timespec* ts)
+int
+iso8601_set_sysclock(const struct iso8601_date* date)
+{
+    static int use_settimeofday = 0;
+    struct timeval tv;
+    struct timespec ts;
+
+    /* not all systems have clock_settime implemented */
+    if(use_settimeofday) goto try_settimeofday;
+
+    /* try setting clock */
+    iso8601_to_ts(&ts, date);
+    if(clock_settime(CLOCK_REALTIME, &ts)) {
+        if(errno == EPERM) return -1;
+        use_settimeofday = 1;
+        goto try_settimeofday;
+    }
+    
+    return 0;
+
+    /* fallback using settimeofday() */
+  try_settimeofday:
+    iso8601_to_tv(&tv, date);
+    return settimeofday(&tv, 0);
+}
+
+
+
+void
+iso8601_from_ts(struct iso8601_date* date, const struct timespec* ts)
 {
     ldiv_t qr;
 
     qr = ldiv(ts->tv_sec, 86400);
+    if(ts->tv_sec < 0) {
+        --qr.quot;
+        qr.rem += 86400;
+    }
     date->day = EPOCH_GDAY + qr.quot;
     date->sec = qr.rem;
     date->nsec = ts->tv_nsec;
@@ -56,7 +91,8 @@ void iso8601_from_ts(struct iso8601_date* date, const struct timespec* ts)
 
 
 
-void iso8601_to_ts(struct timespec* ts, const struct iso8601_date* date)
+void
+iso8601_to_ts(struct timespec* ts, const struct iso8601_date* date)
 {
     ts->tv_sec = 86400L * (date->day - EPOCH_GDAY) + date->sec;
     ts->tv_nsec = date->nsec;
@@ -64,11 +100,42 @@ void iso8601_to_ts(struct timespec* ts, const struct iso8601_date* date)
 
 
 
-void iso8601_from_time_t(struct iso8601_date* date, const time_t* t)
+void
+iso8601_from_tv(struct iso8601_date* date, const struct timeval* tv)
+{
+    ldiv_t qr;
+
+    qr = ldiv(tv->tv_sec, 86400);
+    if(tv->tv_sec < 0) {
+        --qr.quot;
+        qr.rem += 86400;
+    }
+    date->day = EPOCH_GDAY + qr.quot;
+    date->sec = qr.rem;
+    date->nsec = tv->tv_usec * 1000;
+}
+
+
+
+void
+iso8601_to_tv(struct timeval* tv, const struct iso8601_date* date)
+{
+    tv->tv_sec = 86400L * (date->day - EPOCH_GDAY) + date->sec;
+    tv->tv_usec = date->nsec / 1000;
+}
+
+
+
+void
+iso8601_from_time_t(struct iso8601_date* date, const time_t* t)
 {
     ldiv_t qr;
 
     qr = ldiv(*t, 86400);
+    if(*t < 0) {
+        --qr.quot;
+        qr.rem += 86400;
+    }
     date->day = EPOCH_GDAY + qr.quot;
     date->sec = qr.rem;
     date->nsec = 0;
@@ -76,7 +143,8 @@ void iso8601_from_time_t(struct iso8601_date* date, const time_t* t)
 
 
 
-void iso8601_to_time_t(time_t* t, const struct iso8601_date* date)
+void
+iso8601_to_time_t(time_t* t, const struct iso8601_date* date)
 {
     *t = 86400L * (date->day - EPOCH_GDAY) + date->sec;
 }

src/libiso8601/400_c_library.h

@@ -1,7 +1,7 @@
 /* libiso8601/src/libiso8601/400_c_library.h
  *
- *  (c)2006, Laurence Withers, <l@lwithers.me.uk>.
- *  Released under the GNU GPLv2. See file COPYING or
+ *  (c)2006-2010, Laurence Withers, <l@lwithers.me.uk>.
+ *  Released under the GNU GPLv3. See file COPYING or
  *  http://www.gnu.org/copyleft/gpl.html for details.
 */
 
@@ -9,7 +9,8 @@
 
 /*! \defgroup c_library C library integration.
 
-These functions enable integration with the C library (system call wrappers and conversion).
+These functions enable integration with the C library (system call wrappers and
+conversion).
 
 */
 /*!@{*/
@@ -18,30 +19,82 @@ These functions enable integration with the C library (system call wrappers and
 
 /*! \brief Retrieve the current time.
 
-\param[out] date Current date/time (may be 0), in UTC.
-\param[out] details Details (may be 0), including timezone.
+\param[out] date Current date/time (may be 0), in UTC. May be 0.
+\param[out] details Details (may be 0), including timezone. May be 0.
 
-Retrieves the current time from the system clock, storing it into \a date and \a details (both
-parameters optional).
+Retrieves the current time from the system clock, storing it into \a date and
+\a details (both parameters optional).
 
 */
 void iso8601_now(struct iso8601_date* date, struct iso8601_details* details);
 
 
 
+/*! \brief Set the system clock.
+
+\param date Date to set.
+\retval 0 on success.
+\retval -1 on error (and see \a errno).
+
+Attempts to set the system clock using \c clock_settime(), falling back to \c
+settimeofday(). The user will need the \c CAP_SYS_TIME capability to set the
+clock, otherwise \a errno will be set to \c EPERM.
+
+*/
+int iso8601_set_sysclock(const struct iso8601_date* date)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
+
+
+
 /*! \brief Convert from a struct timespec. */
-void iso8601_from_ts(struct iso8601_date* date, const struct timespec* ts);
+void iso8601_from_ts(struct iso8601_date* date, const struct timespec* ts)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
+
 /*! \brief Convert to a struct timespec. */
-void iso8601_to_ts(struct timespec* ts, const struct iso8601_date* date);
+void iso8601_to_ts(struct timespec* ts, const struct iso8601_date* date)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
+
+/*! \brief Convert from a struct timeval. */
+void iso8601_from_tv(struct iso8601_date* date, const struct timeval* tv)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
+
+/*! \brief Convert to a struct timeval. */
+void iso8601_to_tv(struct timeval* tv, const struct iso8601_date* date)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
+
 /*! \brief Convert from a time_t. */
-void iso8601_from_time_t(struct iso8601_date* date, const time_t* t);
+void iso8601_from_time_t(struct iso8601_date* date, const time_t* t)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
+
 /*! \brief Convert to a time_t. */
-void iso8601_to_time_t(time_t* t, const struct iso8601_date* date);
+void iso8601_to_time_t(time_t* t, const struct iso8601_date* date)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
 
 
 
 /*!@}*/
 /* options for text editors
 kate: replace-trailing-space-save true; space-indent true; tab-width 4;
-vim: expandtab:ts=4:sw=4
+vim: expandtab:ts=4:sw=4:syntax=ch.doxygen
 */

src/libiso8601/400_calc.h

@@ -1,7 +1,7 @@
 /* libiso8601/src/libiso8601/400_calc.h
  *
- *  (c)2006, Laurence Withers, <l@lwithers.me.uk>.
- *  Released under the GNU GPLv2. See file COPYING or
+ *  (c)2006-2010, Laurence Withers, <l@lwithers.me.uk>.
+ *  Released under the GNU GPLv3. See file COPYING or
  *  http://www.gnu.org/copyleft/gpl.html for details.
 */
 
@@ -9,8 +9,8 @@
 
 /*! \defgroup calc Conversion and calculation routines.
 
-This set of functions is useful for converting dates and times into formats understood by humans,
-and vice versa.
+This set of functions is useful for converting dates and times into formats
+understood by humans, and vice versa.
 
 */
 /*!@{*/
@@ -38,7 +38,12 @@ int iso8601_isleap(int year);
 \param date Date to convert.
 
 */
-void iso8601_to_cal(int* year, int* month, int* day, const struct iso8601_date* date);
+void iso8601_to_cal(int* year, int* month, int* day,
+    const struct iso8601_date* date)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
 
 
 
@@ -51,11 +56,18 @@ void iso8601_to_cal(int* year, int* month, int* day, const struct iso8601_date*
 \retval 0 on success.
 \retval -1 on error (and see \a errno).
 
-Converts the date specified in \a year, \a month and \a day into \a date. Does not touch the \a sec
-or \a nsec time members of \a date.
+Converts the date specified in \a year, \a month and \a day into \a date.
+
+\note Does not touch the \a sec or \a nsec time members of \a date. This means
+    they will be unchanged after a call to this function. If this will lead to
+    unexpected results, initialise the structure to 0 first.
 
 */
-int iso8601_from_cal(struct iso8601_date* date, int year, int month, int day);
+int iso8601_from_cal(struct iso8601_date* date, int year, int month, int day)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
 
 
 
@@ -66,7 +78,11 @@ int iso8601_from_cal(struct iso8601_date* date, int year, int month, int day);
 \param date Date to convert.
 
 */
-void iso8601_to_ord(int* year, int* oday, const struct iso8601_date* date);
+void iso8601_to_ord(int* year, int* oday, const struct iso8601_date* date)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
 
 
 
@@ -78,11 +94,18 @@ void iso8601_to_ord(int* year, int* oday, const struct iso8601_date* date);
 \retval 0 on success.
 \retval -1 on error (and see \a errno).
 
-Converts the date specified into \a year and \a oday into \a date. Does not touch the \a sec or
-\a nsec time members of \a date.
+Converts the date specified into \a year and \a oday into \a date.
+
+\note Does not touch the \a sec or \a nsec time members of \a date. This means
+    they will be unchanged after a call to this functoin. If this will lead to
+    unexpected results, initialise the structure to 0 first.
 
 */
-int iso8601_from_ord(struct iso8601_date* date, int year, int oday);
+int iso8601_from_ord(struct iso8601_date* date, int year, int oday)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
 
 
 
@@ -94,7 +117,12 @@ int iso8601_from_ord(struct iso8601_date* date, int year, int oday);
 \param date Date to convert.
 
 */
-void iso8601_to_week(int* year, int* week, int* wday, const struct iso8601_date* date);
+void iso8601_to_week(int* year, int* week, int* wday,
+    const struct iso8601_date* date)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
 
 
 
@@ -107,8 +135,18 @@ void iso8601_to_week(int* year, int* week, int* wday, const struct iso8601_date*
 \retval 0 on success.
 \retval -1 on error (and see \a errno).
 
+Converts the date specified into \a year, \a week and \a wday into \a date.
+
+\note Does not touch the \a sec or \a nsec time members of \a date. This means
+    they will be unchanged after a call to this functoin. If this will lead to
+    unexpected results, initialise the structure to 0 first.
+
 */
-int iso8601_from_week(struct iso8601_date* date, int year, int week, int wday);
+int iso8601_from_week(struct iso8601_date* date, int year, int week, int wday)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
 
 
 
@@ -119,11 +157,16 @@ int iso8601_from_week(struct iso8601_date* date, int year, int week, int wday);
 \param[out] sec Output second.
 \param date Date/time to convert.
 
-Converts the time stored in \a date into wall clock format, storing the result in \a hour, \a min
-and \a sec.
+Converts the time stored in \a date into wall clock format, storing the result
+in \a hour, \a min and \a sec.
 
 */
-void iso8601_to_clocktime(int* hour, int* min, int* sec, const struct iso8601_date* date);
+void iso8601_to_clocktime(int* hour, int* min, int* sec,
+    const struct iso8601_date* date)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
 
 
 
@@ -136,16 +179,25 @@ void iso8601_to_clocktime(int* hour, int* min, int* sec, const struct iso8601_da
 \retval 0 on success.
 \retval -1 on error (and see \a errno).
 
-Converts the time as specified by \a hour, \a min and \a sec, storing the result in \a date. Does
-not touch the \a day (date) member of \a date.
+Converts the time as specified by \a hour, \a min and \a sec, storing the
+result in \a date.
+
+\note Does not touch the \a day (date) member of \a date. This means it will be
+    unchanged after a call to this function. If this will lead to unexpected
+    results, initialise the structure to 0 first.
 
 */
-int iso8601_from_clocktime(struct iso8601_date* date, int hour, int min, int sec);
+int iso8601_from_clocktime(struct iso8601_date* date, int hour, int min,
+    int sec)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
 
 
 
 /*!@}*/
 /* options for text editors
 kate: replace-trailing-space-save true; space-indent true; tab-width 4;
-vim: expandtab:ts=4:sw=4
+vim: expandtab:ts=4:sw=4:syntax=ch.doxygen
 */

src/libiso8601/400_leap.h

@@ -1,7 +1,7 @@
 /* libiso8601/src/libiso8601/400_leap.h
  *
- *  (c)2006, Laurence Withers, <l@lwithers.me.uk>.
- *  Released under the GNU GPLv2. See file COPYING or
+ *  (c)2006-2010, Laurence Withers, <l@lwithers.me.uk>.
+ *  Released under the GNU GPLv3. See file COPYING or
  *  http://www.gnu.org/copyleft/gpl.html for details.
 */
 
@@ -9,7 +9,30 @@
 
 /*! \defgroup leap Leap second support.
 
-A set of functions for explicitly dealing with leap seconds.
+A set of functions for explicitly dealing with leap seconds. All library
+functions are implicitly leap second aware, but there are occasions when leap
+seconds must be dealt with explicitly. These functions permit this.
+
+Internally, leap seconds are represented as a table of day numbers; each day
+number present in the table means that the corresponding day has 86401 seconds
+(a leap second).
+
+\note The library does not (yet) have support for negative leap seconds. This
+    support will be added should a day with a negative leap second ever come.
+    This will need to addressed in the API as the current API does not support
+    loading a table of negative leap seconds.
+
+It is possible to create a disk file containing an updated table and to load
+that file using \ref iso8601_leap_table_load (or to explicitly use an existing
+in-memory table with \ref iso8601_leap_table_set). The format of the on-disk
+file is:
+
+<pre># integers are stored big-endian
+[8*char] signature, "/O9PdPZI"
+[uint32] number of entries, 'n'
+
+# entries are repeated 'n' times, and stored lowest day number first
+[uint32] day number of entry</pre>
 
 */
 /*!@{*/
@@ -23,14 +46,19 @@ A set of functions for explicitly dealing with leap seconds.
 \retval 86400 day with no leap second.
 \retval 86401 day with one leap second.
 
-Returns the duration of a day \a date, in seconds. This function takes leap seconds into account and
-may be used to determine if a day contains a leap second or not.
+Returns the duration of a day \a date, in seconds. This function takes leap
+seconds into account and may be used to determine if a day contains a leap
+second or not.
 
-\note There have not yet been any days requiring a negative leap second, so at present 86399 will
-    never be returned.
+\note There have not yet been any days requiring a negative leap second, so at
+    present 86399 will never be returned.
 
 */
-int iso8601_seconds_leap(const struct iso8601_date* date);
+int iso8601_seconds_leap(const struct iso8601_date* date)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
 
 
 
@@ -40,18 +68,68 @@ int iso8601_seconds_leap(const struct iso8601_date* date);
 \param end The end date.
 \returns Number of leap seconds elapsed.
 
-Computes the number of leap seconds that have elapsed between two days. Note that this is the sum of
-such leap seconds, so it will be 0 if (for example) there is one positive leap second and one 
-negative leap second. The ordering of the dates is important; if \a start is after \a end, then the
-value returned will be negative (for positive leap seconds).
+Computes the number of leap seconds that have elapsed between two days. Note
+that this is the sum of such leap seconds, so it will be 0 if (for example)
+there is one positive leap second and one negative leap second. The ordering of
+the dates is important; if \a start is after \a end, then the value returned
+will be negative (for positive leap seconds).
 
 */
-int iso8601_leap_elapsed(const struct iso8601_date* start, const struct iso8601_date* end);
+int iso8601_leap_elapsed(const struct iso8601_date* start,
+    const struct iso8601_date* end)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
+
+
+
+/*! \brief Update table of leap seconds.
+
+\param new_table Array of day numbers on which leap seconds occur.
+\param new_size Number of entries in array.
+
+This function can be used to update the table of leap seconds at runtime. The
+\a new_table argument points to an array of integers, each entry being the day
+number containing a leap second.  The array must be sorted so that lower day
+numbers appear towards the start of the array. \a new_size gives the number of
+entries in the array. \a new_table must persist in memory as long as library
+functions are in use.
+
+\warning If negative leap seconds are ever used, this function will not support
+    them. There may need to be an ABI change in future to solve this problem.
+
+*/
+void iso8601_leap_table_set(int* new_table, int new_size)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
+
+
+
+/*! \brief Load new table of leap seconds from disk.
+
+\param fname Filename. May be 0 for system default.
+\retval 0 on success.
+\retval -1 on error (and see \a errno).
+
+This function attempts to load a new table of leap seconds from disk, using the
+filename \a fname.  If \a fname is not specified, the system default (set at
+compile time) will be used.
+
+If the table is loaded successfully, it will be set with \ref
+iso8601_leap_table_set(). On any error, -1 will be returned, and \a errno will
+be set appropriately. If \a errno is \c EINVAL, then the file does not contain
+a valid leap second table.
+
+*/
+int iso8601_leap_table_load(const char* fname);
 
 
 
 /*!@}*/
 /* options for text editors
 kate: replace-trailing-space-save true; space-indent true; tab-width 4;
-vim: expandtab:ts=4:sw=4
+vim: expandtab:ts=4:sw=4:syntax=ch.doxygen
 */

src/libiso8601/400_manip.c

@@ -1,13 +1,14 @@
 /* libiso8601/src/libiso8601/400_manip.c
  *
- *  (c)2006, Laurence Withers, <l@lwithers.me.uk>.
- *  Released under the GNU GPLv2. See file COPYING or
+ *  (c)2006-2010, Laurence Withers, <l@lwithers.me.uk>.
+ *  Released under the GNU GPLv3. See file COPYING or
  *  http://www.gnu.org/copyleft/gpl.html for details.
 */
 
 
 
-int iso8601_lt(const struct iso8601_date* d1, const struct iso8601_date* d2)
+int
+iso8601_lt(const struct iso8601_date* d1, const struct iso8601_date* d2)
 {
     if(d1->day < d2->day) return 1;
     if(d1->day > d2->day) return 0;
@@ -19,7 +20,8 @@ int iso8601_lt(const struct iso8601_date* d1, const struct iso8601_date* d2)
 
 
 
-int iso8601_lte(const struct iso8601_date* d1, const struct iso8601_date* d2)
+int
+iso8601_lte(const struct iso8601_date* d1, const struct iso8601_date* d2)
 {
     if(d1->day < d2->day) return 1;
     if(d1->day > d2->day) return 0;
@@ -31,48 +33,75 @@ int iso8601_lte(const struct iso8601_date* d1, const struct iso8601_date* d2)
 
 
 
-int iso8601_eq(const struct iso8601_date* d1, const struct iso8601_date* d2)
+int
+iso8601_eq(const struct iso8601_date* d1, const struct iso8601_date* d2)
 {
-    return (d1->day == d2->day) && (d1->sec == d2->sec) && (d1->nsec == d2->nsec);
+    return (d1->day == d2->day) && (d1->sec == d2->sec)
+        && (d1->nsec == d2->nsec);
 }
 
 
 
-void iso8601_add_elapsed(struct iso8601_date* date, const struct iso8601_elapsed* per)
+int
+iso8601_cmp(const struct iso8601_date* d1, const struct iso8601_date* d2)
+{
+    if(d1->day < d2->day) return -1;
+    if(d1->day > d2->day) return 1;
+    if(d1->sec < d2->sec) return -1;
+    if(d1->sec > d2->sec) return 1;
+    if(d1->nsec < d2->nsec) return -1;
+    if(d1->nsec > d2->nsec) return 1;
+    return 0;
+}
+
+
+
+void
+iso8601_add_elapsed(struct iso8601_date* date,
+    const struct iso8601_elapsed* per)
 {
     div_t qr;
     int leapcorrect;
 
-    /* work out number to advance `day' by */
+    /* work out number to advance ‘day’ by */
     qr = div(per->sec, 86400);
     leapcorrect = _leap_elapsed_day(date->day, date->day + qr.quot);
     date->day += qr.quot;
     date->sec += qr.rem - leapcorrect;
+
+    date->nsec += per->nsec;
+    if(date->nsec >= BILLION) {
+        ++date->sec;
+        date->nsec -= BILLION;
+    }
+
     if(date->sec < 0) {
         --date->day;
         date->sec += iso8601_seconds_leap(date);
     }
 
-    date->nsec += per->nsec;
-    if(date->nsec > BILLION) {
-        ++date->sec;
-        date->nsec -= BILLION;
+    if(date->sec >= iso8601_seconds_leap(date)) {
+        date->sec -= iso8601_seconds_leap(date);
+        ++date->day;
     }
 }
 
 
 
-void iso8601_subtract_elapsed(struct iso8601_date* date, const struct iso8601_elapsed* per)
+void 
+iso8601_subtract_elapsed(struct iso8601_date* date,
+    const struct iso8601_elapsed* per)
 {
     div_t qr;
     int leapcorrect;
 
-    /* work out number to advance `day' by */
+    /* work out number to advance ‘day’ by */
     qr = div(per->sec, 86400);
     leapcorrect = _leap_elapsed_day(date->day - qr.quot, date->day);
     date->day -= qr.quot;
     date->sec -= qr.rem - leapcorrect;
     date->nsec -= per->nsec;
+
     if(date->nsec < 0) {
         --date->sec;
         date->nsec += BILLION;
@@ -82,6 +111,7 @@ void iso8601_subtract_elapsed(struct iso8601_date* date, const struct iso8601_el
         --date->day;
         date->sec += iso8601_seconds_leap(date);
     }
+
     if(date->sec >= iso8601_seconds_leap(date)) {
         date->sec -= iso8601_seconds_leap(date);
         ++date->day;
@@ -90,6 +120,84 @@ void iso8601_subtract_elapsed(struct iso8601_date* date, const struct iso8601_el
 
 
 
+void
+iso8601_add_multiple(struct iso8601_date* date,
+    const struct iso8601_elapsed* per, int n)
+{
+    long long nsec;
+    lldiv_t qr;
+    struct iso8601_elapsed mult;
+
+    nsec = per->nsec * llabs(n);
+    qr = lldiv(nsec, BILLION);
+    mult.sec = qr.quot + per->sec * llabs(n);
+    mult.nsec = qr.rem;
+
+    if(n < 0) iso8601_subtract_elapsed(date, &mult);
+    else iso8601_add_elapsed(date, &mult);
+}
+
+
+
+void
+iso8601_difference(const struct iso8601_date* d1, const struct iso8601_date* d2,
+    struct iso8601_elapsed* per, int* sign)
+{
+    const struct iso8601_date* e1, * e2;
+
+    /* compute sign */
+    if(iso8601_lt(d1, d2)) {
+        if(sign) *sign = -1;
+        e1 = d2;
+        e2 = d1;
+    } else {
+        if(sign) *sign = 1;
+        e1 = d1;
+        e2 = d2;
+    }
+
+    if(!per) return;
+
+    /* compute difference, knowing that e1 >= e2 */
+    per->sec = (e1->day - e2->day) * 86400
+        + iso8601_leap_elapsed(e2, e1 /* start, end */)
+        + (e1->sec - e2->sec);
+    if(e1->nsec < e2->nsec) {
+        --per->sec;
+        per->nsec = BILLION + e1->nsec - e2->nsec;
+    } else {
+        per->nsec = e1->nsec - e2->nsec;
+    }
+}
+
+
+
+int
+iso8601_elapsed_div(const struct iso8601_elapsed* num,
+    const struct iso8601_elapsed* denom, struct iso8601_elapsed* remain)
+{
+    unsigned long long pnum, pdenom;
+    lldiv_t val, v2;
+
+    pnum = num->sec;
+    pnum *= BILLION;
+    pnum += num->nsec;
+
+    pdenom = denom->sec;
+    pdenom *= BILLION;
+    pdenom += denom->nsec;
+
+    val = lldiv(pnum, pdenom);
+    if(remain) {
+        v2 = lldiv(val.rem, BILLION);
+        remain->sec = v2.quot;
+        remain->nsec = v2.rem;
+    }
+    return val.quot;
+}
+
+
+
 /* options for text editors
 kate: replace-trailing-space-save true; space-indent true; tab-width 4;
 vim: expandtab:ts=4:sw=4

src/libiso8601/400_manip.h

@@ -1,7 +1,7 @@
 /* libiso8601/src/libiso8601/400_manip.h
  *
- *  (c)2006, Laurence Withers, <l@lwithers.me.uk>.
- *  Released under the GNU GPLv2. See file COPYING or
+ *  (c)2006-2010, Laurence Withers, <l@lwithers.me.uk>.
+ *  Released under the GNU GPLv3. See file COPYING or
  *  http://www.gnu.org/copyleft/gpl.html for details.
 */
 
@@ -9,8 +9,8 @@
 
 /*! \defgroup manip Manipulation routines.
 
-This set of functions is useful for converting dates and times into formats understood by humans,
-and vice versa.
+This set of functions is useful for performing arithmetic etc. on dates. It
+uses struct \ref iso8601_elapsed to represent the magnitude of time differences.
 
 */
 /*!@{*/
@@ -25,7 +25,11 @@ and vice versa.
 \retval 0 otherwise
 
 */
-int iso8601_lt(const struct iso8601_date* d1, const struct iso8601_date* d2);
+int iso8601_lt(const struct iso8601_date* d1, const struct iso8601_date* d2)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
 
 
 
@@ -37,7 +41,11 @@ int iso8601_lt(const struct iso8601_date* d1, const struct iso8601_date* d2);
 \retval 0 otherwise
 
 */
-int iso8601_lte(const struct iso8601_date* d1, const struct iso8601_date* d2);
+int iso8601_lte(const struct iso8601_date* d1, const struct iso8601_date* d2)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
 
 
 
@@ -49,7 +57,28 @@ int iso8601_lte(const struct iso8601_date* d1, const struct iso8601_date* d2);
 \retval 0 otherwise
 
 */
-int iso8601_eq(const struct iso8601_date* d1, const struct iso8601_date* d2);
+int iso8601_eq(const struct iso8601_date* d1, const struct iso8601_date* d2)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
+
+
+
+/*! \brief Comparison (for qsort et al.).
+
+\param d1 First date to compare.
+\param d2 Second date to compare.
+\retval -1 if \a d1 &lt; \a d2
+\retval 0 if \a d1 == \a d2
+\retval 1 if \a d1 &gt; \a d2
+
+*/
+int iso8601_cmp(const struct iso8601_date* d1, const struct iso8601_date* d2)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
 
 
 
@@ -59,7 +88,12 @@ int iso8601_eq(const struct iso8601_date* d1, const struct iso8601_date* d2);
 \param per Period to advance date/time by.
 
 */
-void iso8601_add_elapsed(struct iso8601_date* date, const struct iso8601_elapsed* per);
+void iso8601_add_elapsed(struct iso8601_date* date,
+    const struct iso8601_elapsed* per)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
 
 
 
@@ -69,12 +103,80 @@ void iso8601_add_elapsed(struct iso8601_date* date, const struct iso8601_elapsed
 \param per Period to regress date/time by.
 
 */
-void iso8601_subtract_elapsed(struct iso8601_date* date, const struct iso8601_elapsed* per);
+void iso8601_subtract_elapsed(struct iso8601_date* date,
+    const struct iso8601_elapsed* per)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
+
+
+
+/*! \brief Add a multiple of a period to a date.
+
+\param[in,out] date Date to modify.
+\param per Period to advance date/time by.
+\param n Multiple of \a per.
+
+Adds \a n multiples of \a per to \a date. \a n may be 0 or negative. The result
+is stored in \a date. This is an efficient implementation which avoids loops,
+but it does use 64-bit arithmetic.
+
+*/
+void iso8601_add_multiple(struct iso8601_date* date,
+    const struct iso8601_elapsed* per, int n)
+#ifndef DOXYGEN
+    __attribute__((nonnull))
+#endif
+;
+
+
+
+/*! \brief Find difference between dates.
+
+\param d1 First date.
+\param d2 Second date.
+\param[out] per Magnitude of period elapsed between two dates. Pointer may be 0.
+\param[out] sign Set to sign of difference (-1 or +1). Pointer may be 0.
+
+This function will perform the calculation <code>|d1 - d2|</code>, storing the
+result in \a per (if it is not a null pointer). The sign of the result is
+stored in \a sign (if it is not a null pointer), i.e. -1 if \a d2 &gt; \a d1 or
++1 if \a d2 &lt;= \a d1.
+
+*/
+void iso8601_difference(const struct iso8601_date* d1,
+    const struct iso8601_date* d2, struct iso8601_elapsed* per, int* sign)
+#ifndef DOXYGEN
+    __attribute__((nonnull(1,2)))
+#endif
+;
+
+
+
+/*! \brief Divide one period by another.
+
+\param num Numerator.
+\param denom Denominator (divisor).
+\param[out] remain Remainder. May be 0.
+\returns Number of times \a denom divides into \a num.
+
+This function computes the number of times that \a denom can be divided into \a
+num, returning that number. If desired, the remaining period which could not be
+divided can be written into \a remain.  Uses 64-bit arithmetic internally.
+
+*/
+int iso8601_elapsed_div(const struct iso8601_elapsed* num,
+    const struct iso8601_elapsed* denom, struct iso8601_elapsed* remain)
+#ifndef DOXYGEN
+    __attribute__((nonnull(1,2)));
+#endif
+;
 
 
 
 /*!@}*/
 /* options for text editors
 kate: replace-trailing-space-save true; space-indent true; tab-width 4;
-vim: expandtab:ts=4:sw=4
+vim: expandtab:ts=4:sw=4:syntax=ch.doxygen
 */

src/libiso8601/999_BottomHeader.h

@@ -1,10 +1,14 @@
 /* libiso8601/src/libiso8601/999_BottomHeader.h
  *
- *  (c)2006, Laurence Withers, <l@lwithers.me.uk>.
- *  Released under the GNU GPLv2. See file COPYING or
+ *  (c)2006-2010, Laurence Withers, <l@lwithers.me.uk>.
+ *  Released under the GNU GPLv3. See file COPYING or
  *  http://www.gnu.org/copyleft/gpl.html for details.
 */
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif
 
 /* options for text editors

src/libiso8601/build.install-lib

@@ -7,14 +7,12 @@ build_dir_tree "${INCLUDEDIR}" || return 1
 
 # install library
 echo "Installing libraries into '${LIBDIR}'"
+source src/libiso8601/soversion
 install_file ${libiso8601} ${LIBDIR} 0755 || return 1
 BASE="${libiso8601_BASE}.so"
 MAJOR="${BASE}.${SOMAJOR}"
-MINOR="${MAJOR}.${SOMINOR}"
-MICRO="${MINOR}.${SOMICRO}"
-install_symlink "${MINOR}" "${MICRO}" "${LIBDIR}"
-install_symlink "${MAJOR}" "${MINOR}" "${LIBDIR}"
-install_symlink "${BASE}" "${MAJOR}" "${LIBDIR}"
+MICRO="${MAJOR}.${SOMICRO}"
+install_symlink "${BASE}" "${MICRO}" "${LIBDIR}"
 
 # install header
 echo "Installing header file '${libiso8601_HEADER}' into ${INCLUDEDIR}"
@@ -29,12 +27,11 @@ do_cmd_redir "${CONFFILE}" sed \
     -e "s,@VERSION@,${VERSION}," \
     -e "s,@DEP_CFLAGS@,${libiso8601_DEP_CFLAGS}," \
     -e "s,@DEP_LIBS@,${libiso8601_DEP_LIBS}," \
-    -e "s,@LIB_DIR@,${FINALLIBDIR}," \
-    -e "s,@INCLUDE_DIR@,${FINALINCLUDEDIR}," \
+    -e "s,@LIB_DIR@,${LIBDIR}," \
+    -e "s,@INCLUDE_DIR@,${INCLUDEDIR}," \
     src/libiso8601/config-script
 
 do_cmd chmod 0755 "${CONFFILE}"
 print_success "Done"
 
-# kate: replace-trailing-space-save true; space-indent true; tab-width 4;
-# vim: expandtab:ts=4:sw=4
+# vim: syntax=sh:expandtab:ts=4:sw=4

src/libiso8601/build.lib

@@ -11,10 +11,12 @@ then
     libiso8601_BASE=libiso8601
     source src/libiso8601/soversion
 
-    libiso8601="obj/${libiso8601_BASE}.so.${SOMAJOR}.${SOMINOR}.${SOMICRO}"
+    libiso8601="obj/${libiso8601_BASE}.so.${SOMAJOR}.${SOMICRO}"
     libiso8601_DEP_CFLAGS=""
     libiso8601_DEP_LIBS="-lrt"
-    SO_EXTRA="${libiso8601_DEP_CFLAGS} ${libiso8601_DEP_LIBS} -lc"
+    SO_EXTRA="${libiso8601_DEP_CFLAGS} ${libiso8601_DEP_LIBS} -lc \
+        -D_GNU_SOURCE -std=gnu99 \
+        -DDEFAULT_LEAP_TABLE=\"${DEFAULT_LEAP_TABLE}\""
 
     echo "Building library ${libiso8601}..."
 
@@ -34,13 +36,14 @@ then
     then
         echo " Compiling"
 
-        SONAME="${libiso8601_BASE}.so.${SOMAJOR}.${SOMINOR}"
+        SONAME="${libiso8601_BASE}.so.${SOMAJOR}"
         do_cmd ${CC} ${CFLAGS} -Iobj -shared -fpic -o "${libiso8601}" \
             -Wl,-soname,${SONAME} \
             ${SRC} ${SO_EXTRA} || return 1
 
-        # make tests work
-        do_cmd ln -sf $(basename ${libiso8601}) obj/${SONAME} || return 1
+        # make tests and linking work
+        do_cmd ln -sf "$(basename "${libiso8601}")" "obj/${SONAME}" || return 1
+        do_cmd ln -sf "$(basename "${libiso8601}")" "obj/${libiso8601_BASE}.so" || return 1
 
         print_success "Library built"
     else
@@ -51,5 +54,4 @@ then
     libiso8601_HEADER=${HDR}
 
 fi
-# kate: replace-trailing-space-save true; space-indent true; tab-width 4;
-# vim: expandtab:ts=4:sw=4
+# vim: syntax=sh:expandtab:ts=4:sw=4

src/libiso8601/build.monolithic

@@ -8,14 +8,13 @@ MONOLITHIC_TESTS="src/libiso8601/build.lib src/libiso8601/build.monolithic"
 
 if [ -z "${libiso8601_MONOLITHIC}" ]
 then
-    MONOLITHIC_SOURCE="$(echo src/libiso8601/*.h)"
+    MONOLITHIC_SOURCE="$(find src/libiso8601/ -name '*.h' | sort)"
     make_monolithic ${HDR} Ch || return 1
 
-    MONOLITHIC_SOURCE="$(echo src/libiso8601/*.c)"
+    MONOLITHIC_SOURCE="$(find src/libiso8601/ -name '*.c' | sort)"
     make_monolithic ${SRC} C || return 1
 
     libiso8601_MONOLITHIC=1
     MONOLITHIC_DOC="${MONOLITHIC_DOC} ${HDR}"
 fi
-# kate: replace-trailing-space-save true; space-indent true; tab-width 4;
-# vim: expandtab:ts=4:sw=4
+# vim: syntax=sh:expandtab:ts=4:sw=4

src/libiso8601/config-script

@@ -94,5 +94,4 @@ true
 
 
 
-# vim: expandtab:ts=4:sw=4
-# kate: replace-trailing-space-save true; space-indent true; tab-width 4;
+# vim: syntax=sh:expandtab:ts=4:sw=4

src/libiso8601/pkgconf.in

@@ -1,21 +0,0 @@
-# libiso8601/src/lib/clib/pkgconf.in
-#
-#  Metadata file for pkg-config
-#  ( http://www.freedesktop.org/software/pkgconfig/ )
-#
-#  (c)2006, Laurence Withers, <l@lwithers.me.uk>.
-#  Released under the GNU GPLv2. See file COPYING or
-#  http://www.gnu.org/copyleft/gpl.html for details.
-#
-
-# Name, description
-Name: @TODO@
-Description: @TODO@
-Version: @VERSION@
-
-# Requirements
-Requires:
-
-# Compilation information
-Libs: -L@LIBDIR@ -liso8601
-Cflags: -I@INCLUDEDIR@

src/libiso8601/soversion

@@ -1,17 +1,15 @@
 # libiso8601/src/libiso8601/soversion
 #
-#  (c)2007, Laurence Withers, <l@lwithers.me.uk>.
-#  Released under the GNU GPLv2. See file COPYING or
-#  http://www.gnu.org/copyleft/gpl.html for details.
+#  Copyright: ©2007–2011, Güralp Systems Ltd.
+#  Author: Laurence Withers <lwithers@guralp.com>
+#  License: GPLv3
 #
 
 
 
-# SOMAJOR and SOMINOR are included in the library's soname. They need to
-# be bumped on a binary-incompatible release. They are both single
-# integers.
-SOMAJOR=0
-SOMINOR=1
+# SOMAJOR is included in the library's soname, and needs to be bumped
+# after a binary-incompatible release. It is a single integer.
+SOMAJOR=1
 
 # SOMICRO is bumped every time there is a binary-compatible release.
-SOMICRO=0
+SOMICRO=10

src/setisodate/.params

@@ -0,0 +1 @@
+app c setisodate sbin

src/setisodate/000_TopSource.c

@@ -0,0 +1,45 @@
+/* libiso8601/src/setisodate/000_TopSource.c
+ *
+ *  (c)2007, Laurence Withers, <l@lwithers.me.uk>.
+ *  Released under the GNU GPLv2. See file COPYING or
+ *  http://www.gnu.org/copyleft/gpl.html for details.
+*/
+
+/* Below are all the includes used throughout the application. */
+#include <stdio.h>
+#include "iso8601.h"
+
+
+
+int main(int argc, char* argv[])
+{
+    struct iso8601_date d;
+    char str[100];
+
+    if(argc != 2) {
+        fputs("Expecting one argument: date/time (in ISO8601 format) to set.\n", stderr);
+        return 1;
+    }
+
+    if(iso8601_parse(argv[1], &d, 0, 0)) {
+        fputs("Cannot parse date.\n", stderr);
+        return 1;
+    }
+
+    printf("Setting date to %s.\n",
+        iso8601_print(str, sizeof(str), &d, 0));
+
+    if(iso8601_set_sysclock(&d)) {
+        perror("iso8601_set_sysclock");
+        return 1;
+    }
+
+    return 0;
+}
+
+
+
+/* options for text editors
+kate: replace-trailing-space-save true; space-indent true; tab-width 4;
+vim: expandtab:ts=4:sw=4
+*/

src/setisodate/build.app

@@ -0,0 +1,43 @@
+# These are external variables, and shouldn't clash with anything else
+#  setisodate
+#  setisodate_BUILT
+#
+
+build_target libiso8601
+
+if [ -z ${setisodate_BUILT} ]
+then
+    setisodate="obj/setisodate"
+    EXTRAS="-std=gnu99 -D_GNU_SOURCE -DAPP_NAME=\"setisodate\" \
+        ${libiso8601} ${libiso8601_DEP_CFLAGS} ${libiso8601_DEP_LIBS}"
+
+    echo "Building application ${setisodate}..."
+
+    do_cmd source src/setisodate/build.monolithic || return 1
+
+    MODIFIED=0
+    for test in ${MONOLITHIC_TESTS} ${SRC}
+    do
+        if [ ${test} -nt ${setisodate} ]
+        then
+            MODIFIED=1
+            break
+        fi
+    done
+
+    if [ ${MODIFIED} -ne 0 ]
+    then
+        echo " Compiling..."
+
+        do_cmd ${CC} ${CFLAGS} -I obj -o "${setisodate}" ${SRC} ${EXTRAS} || return 1
+
+        print_success "Application built"
+    else
+        print_success "Application up to date"
+    fi
+
+    setisodate_BUILT=1
+
+fi
+
+# vim: syntax=sh:expandtab:ts=4:sw=4

src/setisodate/build.default

@@ -0,0 +1 @@
+source src/setisodate/build.app

src/setisodate/build.install

@@ -0,0 +1 @@
+source src/setisodate/build.install-app

src/setisodate/build.install-app

@@ -0,0 +1,11 @@
+build_target setisodate
+
+# make paths (this is for Gentoo in particular)
+build_dir_tree "${SBINDIR}" || return 1
+
+# install binary
+echo "Installing binaries into '${SBINDIR}'"
+install_file "${setisodate}" "${SBINDIR}" 0755 || return 1
+print_success "Done"
+
+# vim: syntax=sh:expandtab:ts=4:sw=4

src/setisodate/build.monolithic

@@ -0,0 +1,17 @@
+# These are external variables, and shouldn't clash with anything else
+#  setisodate_MONOLITHIC
+#
+
+SRC="obj/setisodate.c"
+MONOLITHIC_TESTS="src/setisodate/build.app src/setisodate/build.monolithic"
+
+if [ -z "${setisodate_MONOLITHIC}" ]
+then
+    MONOLITHIC_SOURCE="$(find src/setisodate/ -name '*.c' | sort)"
+    make_monolithic ${SRC} C || return 1
+
+    setisodate_MONOLITHIC=1
+    MONOLITHIC_DOC="${MONOLITHIC_DOC} ${SRC}"
+fi
+
+# vim: syntax=sh:expandtab:ts=4:sw=4

src/tests/build.default

@@ -1,3 +1 @@
 source src/tests/build.tests
-# kate: replace-trailing-space-save true; space-indent true; tab-width 4;
-# vim: expandtab:ts=4:sw=4

src/tests/build.tests

@@ -6,15 +6,15 @@ build_target libiso8601 || return 1
 
 if [ -z ${tests_BUILT} ]
 then
-    LIBS="${libiso8601} "
-    EXTRAS="-D_GNU_SOURCE"
+    LIBS="${libiso8601} ${libiso8601_DEP_CFLAGS} ${libiso8601_DEP_LIBS} "
+    EXTRAS="-lm"
 
     echo "Building test programs..."
     do_cmd mkdir -p obj/tests || return 1
 
     for SRC in src/tests/*.c
     do
-        TEST="obj/tests/$(basename ${SRC} | sed -e 's,.c$,,')"
+        TEST="obj/tests/$(basename "${SRC}" ".c")"
         MODIFIED=0
         for file in ${LIBS} ${SRC} src/tests/build.tests
         do
@@ -39,5 +39,4 @@ then
     tests_BUILT=1
 fi
 
-# kate: replace-trailing-space-save true; space-indent true; tab-width 4;
-# vim: expandtab:ts=4:sw=4
+# vim: syntax=sh:expandtab:ts=4:sw=4

src/tests/manip.c

@@ -0,0 +1,369 @@
+/* libiso8601/src/tests/manip.c
+ *
+ *  (c)2007, Laurence Withers, <l@lwithers.me.uk>.
+ *  Released under the GNU GPLv2. See file COPYING or
+ *  http://www.gnu.org/copyleft/gpl.html for details.
+*/
+
+#include "iso8601.h"
+
+#include <math.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+
+/* safe_strtod()
+ *  Converts `str' into a double, which it will store in `out'. If an error occurs, returns -1,
+ *  else 0 on success.
+ */
+int safe_strtod(const char* str, double* out)
+{
+    char* endp = 0;
+
+    errno = 0;
+    *out = strtod(str, &endp);
+    if(errno || !endp || *endp) return -1;
+
+    return 0;
+}
+
+
+
+/* date_stack
+ *  We use a stack of dates and/or periods to implement effectively an RPN manipulator.
+ */
+enum date_stack_type {
+    date_stack_type_date,
+    date_stack_type_per
+};
+
+struct date_stack {
+    enum date_stack_type type;
+
+    union {
+        struct {
+            struct iso8601_date d;
+            struct iso8601_details det;
+        }date;
+
+        struct iso8601_elapsed per;
+    }u;
+
+    struct date_stack* next;
+};
+
+struct date_stack* date_stack_top = 0;
+int date_stack_size = 0;
+
+
+
+/* date_stack_push_*()
+ *  Routines for pushing an object onto the date stack.
+ */
+void date_stack_push_date(const struct iso8601_date* d, const struct iso8601_details* det)
+{
+    struct date_stack* s;
+
+    s = malloc(sizeof(struct date_stack));
+    s->type = date_stack_type_date;
+    s->u.date.d = *d;
+    s->u.date.det = *det;
+    s->next = date_stack_top;
+
+    date_stack_top = s;
+    ++date_stack_size;
+}
+
+void date_stack_push_elapsed(const struct iso8601_elapsed* per)
+{
+    struct date_stack* s;
+
+    s = malloc(sizeof(struct date_stack));
+    s->type = date_stack_type_per;
+    s->u.per = *per;
+    s->next = date_stack_top;
+
+    date_stack_top = s;
+    ++date_stack_size;
+}
+
+
+
+/* date_stack_pop()
+ *  Pops an element from the date stack.
+ */
+void date_stack_pop(void)
+{
+    struct date_stack* next;
+
+    --date_stack_size;
+    next = date_stack_top->next;
+    free(date_stack_top);
+    date_stack_top = next;
+}
+
+
+
+/* date_stack_pop_date()
+ *  Pops a date from the stack, returning non-0 on error (underflow or type mismatch).
+ */
+int date_stack_pop_date(struct iso8601_date* d, struct iso8601_details* det)
+{
+    if(!date_stack_top) {
+        fputs("Stack underflow.\n", stderr);
+        return -1;
+    }
+    if(date_stack_top->type != date_stack_type_date) {
+        fputs("Type mismatch.\n", stderr);
+        return -1;
+    }
+
+    *d = date_stack_top->u.date.d;
+    *det = date_stack_top->u.date.det;
+    date_stack_pop();
+
+    return 0;
+}
+
+
+
+/* date_stack_pop_elapsed()
+ *  Pops an elapsed period from the stack, returning non-0 on error (underflow or type mismatch).
+ */
+int date_stack_pop_elapsed(struct iso8601_elapsed* per)
+{
+    if(!date_stack_top) {
+        fputs("Stack underflow.\n", stderr);
+        return -1;
+    }
+    if(date_stack_top->type != date_stack_type_per) {
+        fputs("Type mismatch.\n", stderr);
+        return -1;
+    }
+
+    *per = date_stack_top->u.per;
+    date_stack_pop();
+
+    return 0;
+}
+
+
+
+/* date_stack_dump()
+ *  Dumps and clears the contents of the date stack.
+ */
+void date_stack_dump(void)
+{
+    while(date_stack_top) {
+        switch(date_stack_top->type) {
+        case date_stack_type_date:
+            fprintf(stderr, "Date (day=%d, sec=%d, nsec=%d)\n",
+                date_stack_top->u.date.d.day, date_stack_top->u.date.d.sec, date_stack_top->u.date.d.nsec);
+            break;
+            
+        case date_stack_type_per:
+            fprintf(stderr, "Period (sec=%d, nsec=%d)\n",
+                date_stack_top->u.per.sec, date_stack_top->u.per.nsec);
+            break;
+
+        default:
+            fprintf(stderr, "Unknown type %d.\n", date_stack_top->type);
+            break;
+        }
+        date_stack_pop();
+    }
+}
+
+
+
+/* usage()
+ *  Displays help.
+ */
+void usage(void)
+{
+    fputs("Push a date or elapsed time onto the stack by entering it, e.g.:\n"
+        "   2007-07-29      12345.67\n"
+        "Operators:\n"
+        "   +   (date, period)      Advance date by elapsed time, push date.\n"
+        "   -   (date, period)      Regress date by elapsed time, push date.\n"
+        "   +*  (date, period, num) Advance date by elapsed time multiplied by num, push date.\n"
+        "   -*  (date, period, num) Regress date by elapsed time multiplied by num, push date.\n"
+        "   dp  (date, date)        Compute difference, print elapsed time.\n"
+        "   <   (date, date)        Prints 1 if first date less than second.\n"
+        "   <=  (date, date)        Prints 1 if first date less than or equal to second.\n"
+        "   ==  (date, date)        Prints 1 if dates equal.\n"
+        "   p   (date)              Prints a date.\n"
+        "   ds                      Dump stack.\n"
+        "\n"
+        "Type help for this screen at any point.\n"
+    "\n", stdout);
+}
+
+
+
+int parse_command(char* cmd)
+{
+    struct iso8601_date date, date2;
+    struct iso8601_details details, details2;
+    struct iso8601_elapsed period, num;
+    double period_d;
+    char date_str[40];
+    int ret = 0, sign;
+
+    cmd = strtok(cmd, " \n");
+    while(cmd) {
+        if(!iso8601_parse(cmd, &date, 0, &details)) {
+            date_stack_push_date(&date, &details);
+
+        } else if(!safe_strtod(cmd, &period_d) && period_d >= 0) {
+            period.sec = trunc(period_d);
+            period.nsec = trunc((period_d - period.sec) * 1e9);
+            date_stack_push_elapsed(&period);
+
+        } else if(!strcmp(cmd, "+")) {
+            if(date_stack_pop_elapsed(&period) || date_stack_pop_date(&date, &details)) {
+                ret = 1;
+
+            } else {
+                iso8601_add_elapsed(&date, &period);
+                date_stack_push_date(&date, &details);
+            }
+
+        } else if(!strcmp(cmd, "-")) {
+            if(date_stack_pop_elapsed(&period) || date_stack_pop_date(&date, &details)) {
+                ret = 1;
+
+            } else {
+                iso8601_subtract_elapsed(&date, &period);
+                date_stack_push_date(&date, &details);
+
+            }
+
+        } else if(!strcmp(cmd, "+*") || !strcmp(cmd, "-*")) {
+            if(date_stack_pop_elapsed(&num)) {
+                ret = 1;
+
+            } else if(num.nsec) {
+                ret = 1;
+                fputs("Number cannot be fractional.\n", stderr);
+
+            } else {
+
+                if(date_stack_pop_elapsed(&period) || date_stack_pop_date(&date, &details)) {
+                    ret = 1;
+
+                } else {
+                    iso8601_add_multiple(&date, &period, ((cmd[0] == '-') ? -1 : 1) * num.sec);
+                    date_stack_push_date(&date, &details);
+
+                }
+
+            }
+
+        } else if(!strcmp(cmd, "dp")) {
+            if(date_stack_pop_date(&date, &details) || date_stack_pop_date(&date2, &details2)) {
+                ret = 1;
+
+            } else {
+                iso8601_difference(&date2, &date, &period, &sign);
+                printf("Difference: %c %lu.%09lu\n",
+                    (sign < 0) ? '-' : '+',
+                    (unsigned long)period.sec,
+                    (unsigned long)period.nsec);
+
+            }
+
+        } else if(!strcmp(cmd, "<")) {
+            if(date_stack_pop_date(&date, &details) || date_stack_pop_date(&date2, &details2)) {
+                ret = 1;
+
+            } else {
+                printf("%d\n", iso8601_lt(&date2, &date));
+
+            }
+
+        } else if(!strcmp(cmd, "<=")) {
+            if(date_stack_pop_date(&date, &details) || date_stack_pop_date(&date2, &details2)) {
+                ret = 1;
+
+            } else {
+                printf("%d\n", iso8601_lte(&date2, &date));
+
+            }
+
+        } else if(!strcmp(cmd, "==")) {
+            if(date_stack_pop_date(&date, &details) || date_stack_pop_date(&date2, &details2)) {
+                ret = 1;
+
+            } else {
+                printf("%d\n", iso8601_eq(&date2, &date));
+
+            }
+
+        } else if(!strcmp(cmd, "p")) {
+            if(date_stack_pop_date(&date, &details)) {
+                ret = 1;
+
+            } else {
+                iso8601_print(date_str, sizeof(date_str), &date, &details);
+                fputs(date_str, stdout);
+                putc('\n', stdout);
+            }
+
+        } else if(!strcmp(cmd, "ds")) {
+            date_stack_dump();
+
+        } else {
+            fputs("Unrecognised command or argument.\n", stderr);
+            ret = 1;
+
+        }
+        
+        cmd = strtok(0, " \n");
+    }
+
+    return ret;
+}
+
+
+
+int main(int argc, char* argv[])
+{
+    int ret = 0;
+    char* buf = 0;
+    size_t buf_len = 0;
+
+    if(argc == 2 && !strcmp(argv[1], "--print-summary")) {
+        printf("Interactive date manipulator. Also evaluates commandline.\n");
+        return 0;
+    }
+
+    /* commandline -- evaluate arguments as though interactive */
+    if(argc > 1) {
+        for(ret = 1; ret < argc; ++ret) {
+            if(parse_command(argv[ret])) return 1;
+        }
+        return 0;
+    }
+
+    usage();
+    while(!feof(stdin)) {
+        printf("%d >> ", date_stack_size);
+        ret = getline(&buf, &buf_len, stdin);
+        if(ret == -1) break;
+
+        parse_command(buf);
+    }
+
+    return 0;
+}
+
+
+
+/* options for text editors
+kate: replace-trailing-space-save true; space-indent true; tab-width 4;
+vim: expandtab:ts=4:sw=4
+*/

src/tests/printer.c

@@ -204,7 +204,7 @@ int main(int argc, char* argv[])
     int ret = 0;
     struct iso8601_date dt;
     struct iso8601_details details, details2;
-    char buf[100], buf2[100];
+    char buf[40], buf2[40];
     const struct test* test;
 
     if(argc == 2 && !strcmp(argv[1], "--print-summary")) {
@@ -215,7 +215,11 @@ int main(int argc, char* argv[])
     iso8601_now(&dt, &details);
     printf("%-30s  %-30s  %s\n", "Name", "Basic format", "Extended format");
     for(test = tests; test->desc; ++test) {
+        memset(buf, 'X', sizeof(buf));
+        memset(buf2, 'X', sizeof(buf2)); /* test null-termination */
+
         test->do_details(&details2, &details);
+
         iso8601_print(buf, sizeof(buf), &dt, &details2);
         ++details2.extended;
         iso8601_print(buf2, sizeof(buf2), &dt, &details2);

src/tests/template

@@ -1,9 +1,9 @@
-/* libiso8601/src/tests/???.c
+/* libiso8601/src/tests/xxx.c
  *
- *  (c)2007, Laurence Withers, <l@lwithers.me.uk>.
- *  Released under the GNU GPLv2. See file COPYING or
- *  http://www.gnu.org/copyleft/gpl.html for details.
-*/
+ *  Copyright: ©2007–2011, Güralp Systems Ltd.
+ *  Author: Laurence Withers <lwithers@guralp.com>
+ *  License: GPLv3
+ */
 
 #include "iso8601.h"
 
@@ -12,12 +12,13 @@
 
 
 
-int main(int argc, char* argv[])
+int
+main(int argc, char* argv[])
 {
     int ret = 0;
 
     if(argc == 2 && !strcmp(argv[1], "--print-summary")) {
-        printf("One line summary.\n");
+        fputs("One line summary.\n", stdout);
         return 0;
     }
 
@@ -30,7 +31,8 @@ int main(int argc, char* argv[])
     return ret;
 }
 
+
+
 /* options for text editors
-kate: replace-trailing-space-save true; space-indent true; tab-width 4;
 vim: expandtab:ts=4:sw=4
 */

version

@@ -1,8 +1,8 @@
 # libiso8601/version
 # 
-#  (c)2007, Laurence Withers, <l@lwithers.me.uk>.
-#  Released under the GNU GPLv2. See file COPYING or
-#  http://www.gnu.org/copyleft/gpl.html for details.
+#  Copyright: ©2007–2011, Güralp Systems Ltd.
+#  Author: Laurence Withers <lwithers@guralp.com>
+#  License: GPLv3
 #
 
 
@@ -10,8 +10,7 @@
 # VERSION contains the full version number of the library, which is 
 # expected to be in 'major.minor.micro' format.
 VERMAJOR=0
-VERMINOR=2
-VERMICRO=1
+VERMINOR=3
+VERMICRO=15
 
-# kate: replace-trailing-space-save true; space-indent true; tab-width 4;
-# vim: expandtab:ts=4:sw=4
+# vim: expandtab:ts=4:sw=4:syntax=sh